RotationFrame Class Reference

Rotation frame around vector. More...

#include <ReferenceFrame.h>

Inheritance diagram for RotationFrame:

Public Member Functions
	RotationFrame (const ROOT::Math::XYZVector &newX, const ROOT::Math::XYZVector &newY, const ROOT::Math::XYZVector &newZ)
	Create new rotation frame.
virtual ROOT::Math::XYZVector	getVertex (const ROOT::Math::XYZVector &vector) const override
	Get vertex 3-vector in rotation frame.
virtual ROOT::Math::PxPyPzEVector	getMomentum (const ROOT::Math::PxPyPzEVector &vector) const override
	Get Lorentz vector in rotation frame.
virtual TMatrixFSym	getMomentumErrorMatrix (const TMatrixFSym &matrix) const override
	Get Momentum error matrix in rotation frame.
virtual TMatrixFSym	getVertexErrorMatrix (const TMatrixFSym &matrix) const override
	Get Vertex error matrix in rotation frame.
virtual ROOT::Math::XYZVector	getVertex (const Particle *particle) const
	Wrapper for particles.
virtual ROOT::Math::PxPyPzEVector	getMomentum (const Particle *particle) const
	Wrapper for particles.
virtual TMatrixFSym	getMomentumErrorMatrix (const Particle *particle) const
	Wrapper for particles.
virtual TMatrixFSym	getVertexErrorMatrix (const Particle *particle) const
	Wrapper for particles.

Static Public Member Functions
static const ReferenceFrame &	GetCurrent ()
	Get current rest frame.

Static Private Member Functions
static void	Push (const ReferenceFrame *frame)
	Push rest frame of given particle.
static void	Pop ()
	Pop current rest frame.

Private Attributes
ROOT::Math::Rotation3D	m_rotation
	Rotation.

Static Private Attributes
static std::stack< const ReferenceFrame * >	m_reference_frames
	Stack of current rest frames.

Detailed Description

Rotation frame around vector.

Definition at line 253 of file ReferenceFrame.h.

Constructor & Destructor Documentation

RotationFrame()

RotationFrame ( const ROOT::Math::XYZVector & newX, const ROOT::Math::XYZVector & newY, const ROOT::Math::XYZVector & newZ )

explicit

Create new rotation frame.

Definition at line 163 of file ReferenceFrame.cc.

                                                            :
  m_rotation(newX.Unit(), newY.Unit(), newZ.Unit())
{
  m_rotation.Invert();
}

Member Function Documentation

GetCurrent()

const ReferenceFrame & GetCurrent ( )

staticinherited

Get current rest frame.

Returns

RestFrame

Definition at line 26 of file ReferenceFrame.cc.

{
  if (m_reference_frames.empty()) {
    static LabFrame _default;
    return _default;
  } else {
    return *m_reference_frames.top();
  }
}

getMomentum() [1/2]

virtual ROOT::Math::PxPyPzEVector getMomentum ( const Particle * particle ) const

inlinevirtualinherited

Wrapper for particles.

Parameters

particle

particle

Returns

momentum 4-vector in reference frame

Definition at line 60 of file ReferenceFrame.h.

    {
      return getMomentum(particle->get4Vector());
    }

getMomentum() [2/2]

ROOT::Math::PxPyPzEVector getMomentum ( const ROOT::Math::PxPyPzEVector & vector ) const

overridevirtual

Get Lorentz vector in rotation frame.

Parameters

vector

Lorentz vector from particle

Returns

Lorentz vector in rotation frame

Implements ReferenceFrame.

Definition at line 175 of file ReferenceFrame.cc.

{
  return m_rotation * vector;
}

getMomentumErrorMatrix() [1/2]

virtual TMatrixFSym getMomentumErrorMatrix ( const Particle * particle ) const

inlinevirtualinherited

Wrapper for particles.

Parameters

particle

particle

Returns

Covariance matrix in reference frame

Definition at line 77 of file ReferenceFrame.h.

    {
      return getMomentumErrorMatrix(particle->getMomentumErrorMatrix());
    }

getMomentumErrorMatrix() [2/2]

TMatrixFSym getMomentumErrorMatrix ( const TMatrixFSym & matrix ) const

overridevirtual

Get Momentum error matrix in rotation frame.

Parameters

matrix

Covariance matrix from particle

Returns

Covariance matrix in rotation frame

Implements ReferenceFrame.

Definition at line 180 of file ReferenceFrame.cc.

{
  TMatrixD extendedrot(4, 4);
  extendedrot.Zero();
  m_rotation.GetRotationMatrix(extendedrot);
  extendedrot(3, 3) = 1;
 
  TMatrixFSym tmp_matrix(matrix);
  return tmp_matrix.Similarity(extendedrot);
}

getVertex() [1/2]

virtual ROOT::Math::XYZVector getVertex ( const Particle * particle ) const

inlinevirtualinherited

Wrapper for particles.

Parameters

particle

Returns

3-vector in reference frame

Definition at line 43 of file ReferenceFrame.h.

    {
      return getVertex(particle->getVertex());
    }

getVertex() [2/2]

ROOT::Math::XYZVector getVertex ( const ROOT::Math::XYZVector & vector ) const

overridevirtual

Get vertex 3-vector in rotation frame.

Parameters

vector

3-vector from particle

Returns

3-vector in rotation frame

Implements ReferenceFrame.

Definition at line 170 of file ReferenceFrame.cc.

{
  return m_rotation * vector;
}

getVertexErrorMatrix() [1/2]

virtual TMatrixFSym getVertexErrorMatrix ( const Particle * particle ) const

inlinevirtualinherited

Wrapper for particles.

Parameters

particle

Returns

Covariance matrix in reference frame

Definition at line 94 of file ReferenceFrame.h.

    {
      return getVertexErrorMatrix(particle->getVertexErrorMatrix());
    }

getVertexErrorMatrix() [2/2]

TMatrixFSym getVertexErrorMatrix ( const TMatrixFSym & matrix ) const

overridevirtual

Get Vertex error matrix in rotation frame.

Parameters

matrix

Covariance matrix from particle

Returns

Covariance matrix in rotation frame

Implements ReferenceFrame.

Definition at line 191 of file ReferenceFrame.cc.

{
  TMatrixD rotmatrix(3, 3);
  m_rotation.GetRotationMatrix(rotmatrix);
 
  TMatrixFSym tmp_matrix(matrix);
  return tmp_matrix.Similarity(rotmatrix);
}

Pop()

static void Pop ( )

inlinestaticprivateinherited

Pop current rest frame.

Definition at line 118 of file ReferenceFrame.h.

    {
      m_reference_frames.pop();
    }

Push()

static void Push ( const ReferenceFrame * frame )

inlinestaticprivateinherited

Push rest frame of given particle.

Parameters

frame

Use this reference frame

Definition at line 110 of file ReferenceFrame.h.

    {
      m_reference_frames.push(frame);
    }

Member Data Documentation

m_reference_frames

std::stack< const ReferenceFrame * > m_reference_frames

staticprivateinherited

Stack of current rest frames.

Definition at line 123 of file ReferenceFrame.h.

m_rotation

ROOT::Math::Rotation3D m_rotation

private

Rotation.

Definition at line 290 of file ReferenceFrame.h.

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

• analysis/utility/include/ReferenceFrame.h
• analysis/utility/src/ReferenceFrame.cc