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Public Types | Public Member Functions | Static Public Member Functions | Static Public Attributes | List of all members
COSDIRECTIONXY_NAME< PointType > Class Template Reference
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This is a specialization returning floats, where value calculates the cos of the angle of the segment of two hits in the XY plane. More...

#include <CosDirectionXY.h>

Inheritance diagram for COSDIRECTIONXY_NAME< PointType >:
SelectionVariable< PointType, 2, double >

Public Types

typedef double variableType
 Type of the returned object.
 
typedef PointType argumentType
 Type of the argument object.
 
typedef FunctionOf< Nargs, variableType, constargumentType & >::functionType functionType
 Type of the function returning the value.
 

Public Member Functions

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

Static Public Member Functions

static double value (const PointType &outerHit, const PointType &innerHit)
 calculates the distance between the hits in z (1D), returning unit: cm
 

Static Public Attributes

static const size_t c_Nargs
 Number of arguments.
 

Detailed Description

template<typename PointType>
class Belle2::COSDIRECTIONXY_NAME< PointType >

This is a specialization returning floats, where value calculates the cos of the angle of the segment of two hits in the XY plane.

Definition at line 25 of file CosDirectionXY.h.

Member Typedef Documentation

◆ argumentType

typedef PointType 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,constargumentType&>::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 double 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()

static double value ( const PointType &  outerHit,
const PointType &  innerHit 
)
inlinestatic

calculates the distance between the hits in z (1D), returning unit: cm

Definition at line 31 of file CosDirectionXY.h.

32 {
33 double result = (outerHit.X() * innerHit.X() + outerHit.Y() * innerHit.Y());
34 result /= sqrt(outerHit.X() * outerHit.X() + outerHit.Y() * outerHit.Y());
35 result /= sqrt(innerHit.X() * innerHit.X() + innerHit.Y() * innerHit.Y());
36 return result;
37 }
Belle2::B2Vector3::X
DataType X() const
access variable X (= .at(0) without boundary check)
Definition: B2Vector3.h:431
Belle2::B2Vector3::Y
DataType Y() const
access variable Y (= .at(1) without boundary check)
Definition: B2Vector3.h:433
Belle2::sqrt
double sqrt(double a)
sqrt for double
Definition: beamHelpers.h:28
Belle2::outerHit
B2Vector3D outerHit(0, 0, 0)
testing out of range behavior

Member Data Documentation

◆ c_Nargs

const size_t c_Nargs
staticinherited

Number of arguments.

Definition at line 91 of file SelectionVariable.h.

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