Belle II Software  release-05-01-25
Angle3DFull.h
1 /**************************************************************************
2 * BASF2 (Belle Analysis Framework 2) *
3 * Copyright(C) 2014 - Belle II Collaboration *
4 * *
5 * Author: The Belle II Collaboration *
6 * Contributors: Jakob Lettenbichler (jakob.lettenbichler@oeaw.ac.at) *
7 * *
8 * This software is provided "as is" without any warranty. *
9 **************************************************************************/
10 
11 #pragma once
12 
13 #include <tracking/trackFindingVXD/filterMap/filterFramework/SelectionVariable.h>
14 #include <framework/geometry/B2Vector3.h>
15 
16 #include <cmath>
17 
18 #define ANGLE3DFULL_NAME Angle3DFull
19 
20 namespace Belle2 {
31  template <typename PointType >
32  class ANGLE3DFULL_NAME : public SelectionVariable< PointType, 3, double > {
33  public:
36 
37 
38 
40  static double value(const PointType& outerHit, const PointType& centerHit, const PointType& innerHit)
41  {
42 
43  B2Vector3D outerVector(outerHit.X() - centerHit.X(), outerHit.Y() - centerHit.Y(), outerHit.Z() - centerHit.Z());
44  B2Vector3D innerVector(centerHit.X() - innerHit.X(), centerHit.Y() - innerHit.Y(), centerHit.Z() - innerHit.Z());
45 
46  double result = acos(outerVector.Dot(innerVector) / (outerVector.Mag() * innerVector.Mag())); // 0-pi
47  result = (result * (180. / M_PI));
48  return (std::isnan(result) || std::isinf(result)) ? double(0) : result;
49  }
50  };
51 
53 }
Belle2::ANGLE3DFULL_NAME::value
static double value(const PointType &outerHit, const PointType &centerHit, const PointType &innerHit)
calculates the angle between the hits/vectors (3D), returning unit: angle in degrees
Definition: Angle3DFull.h:40
Belle2::B2Vector3< double >
Belle2::B2Vector3::Dot
DataType Dot(const B2Vector3< DataType > &p) const
Scalar product.
Definition: B2Vector3.h:289
Belle2::ANGLE3DFULL_NAME
calculates the angle between the hits/vectors (3D), returning unit: angle in degrees.
Definition: Angle3DFull.h:32
Belle2
Abstract base class for different kinds of events.
Definition: MillepedeAlgorithm.h:19
Belle2::SelectionVariable
Base class of the selection variable objects used for pair filtering.
Definition: SelectionVariable.h:54
Belle2::ANGLE3DFULL_NAME::PUT_NAME_FUNCTION
PUT_NAME_FUNCTION(ANGLE3DFULL_NAME)
is replaced by "static const std:string name(void)" frunction which returns name of the Class
Belle2::B2Vector3::Mag
DataType Mag() const
The magnitude (rho in spherical coordinate system).
Definition: B2Vector3.h:158