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AlignableDet Class Reference

#include <AlignableDet.h>

Inheritance diagram for AlignableDet:
AlignableComposite Alignable AlignableCSCChamber AlignableDTChamber AlignableDTSuperLayer AlignableSiStripDet

Public Member Functions

void addAlignmentPositionError (const AlignmentPositionError &ape, bool propagateDown) override
 
void addAlignmentPositionErrorFromRotation (const RotationType &rot, bool propagateDown) override
 
 AlignableDet (const GeomDet *geomDet, bool addComponents=true)
 
AlignmentErrorsExtendedalignmentErrors () const override
 Return vector of alignment errors. More...
 
const AlignmentPositionErroralignmentPositionError () const
 alignment position error - for checking only, otherwise use alignmentErrors() above! More...
 
Alignmentsalignments () const override
 Return vector of alignment data. More...
 
void setAlignmentPositionError (const AlignmentPositionError &ape, bool propagateDown) override
 Set the AlignmentPositionError and, if (propagateDown), to all components. More...
 
void update (const GeomDet *geomDet, bool updateComponents=true)
 
 ~AlignableDet () override
 Destructor. More...
 
- Public Member Functions inherited from AlignableComposite
void addAlignmentPositionErrorFromLocalRotation (const RotationType &rotation, bool propagateDown) override
 
void addComponent (Alignable *component) override
 
void addSurfaceDeformation (const SurfaceDeformation *deformation, bool propagateDown) override
 
 AlignableComposite (align::ID id, StructureType aType, const RotationType &rot=RotationType())
 
StructureType alignableObjectId () const override
 Return the alignable type identifier. More...
 
Alignables components () const override
 Return vector of direct components. More...
 
void dump () const override
 Recursive printout of alignable structure. More...
 
void move (const GlobalVector &displacement) override
 Move with respect to the global reference frame. More...
 
virtual void moveComponentLocal (const int i, const LocalVector &localDisplacement)
 Move a single component with respect to the local reference frame. More...
 
virtual void moveComponentsLocal (const LocalVector &localDisplacement)
 Move with respect to the local reference frame. More...
 
void recursiveComponents (Alignables &result) const override
 Provide all components, subcomponents etc. (cf. description in base class) More...
 
void rotateInGlobalFrame (const RotationType &rotation) override
 Rotation interpreted in global reference frame. More...
 
void setSurfaceDeformation (const SurfaceDeformation *deformation, bool propagateDown) override
 Set the surface deformation parameters - if (!propagateDown) do not affect daughters. More...
 
int surfaceDeformationIdPairs (std::vector< std::pair< int, SurfaceDeformation * > > &) const override
 Return surface deformations. More...
 
void update (align::ID, StructureType aType, const RotationType &rot=RotationType())
 
 ~AlignableComposite () override
 deleting its components More...
 
- Public Member Functions inherited from Alignable
 Alignable (align::ID, const AlignableSurface &)
 
 Alignable (align::ID, const RotationType &)
 
AlignmentParametersalignmentParameters () const
 Get the AlignmentParameters. More...
 
virtual void cacheTransformation ()
 cache the current position, rotation and other parameters (e.g. surface deformations), also for possible components More...
 
virtual void cacheTransformation (const align::RunNumber &)
 
virtual CompConstraintType compConstraintType () const
 Return the alignable type of contraints wrt. its components. More...
 
const AlignablesdeepComponents () const
 
const GlobalVectordisplacement () const
 Return change of the global position since the creation of the object. More...
 
bool firstCompsWithParams (Alignables &paramComps) const
 
const DetIdgeomDetId () const
 
const PositionTypeglobalPosition () const
 Return the global position of the object. More...
 
const RotationTypeglobalRotation () const
 Return the global orientation of the object. More...
 
align::ID id () const
 Return the ID of Alignable, i.e. DetId of 'first' component GeomDet(Unit). More...
 
bool lastCompsWithParams (Alignables &paramComps) const
 
Alignablemother () const
 Return pointer to container alignable (if any) More...
 
virtual void restoreCachedTransformation ()
 restore the previously cached transformation, also for possible components More...
 
virtual void restoreCachedTransformation (const align::RunNumber &)
 
virtual void rotateAroundGlobalAxis (const GlobalVector &axis, Scalar radians)
 Rotation around arbitratry global axis. More...
 
virtual void rotateAroundGlobalX (Scalar radians)
 Rotation around global x-axis. More...
 
virtual void rotateAroundGlobalY (Scalar radians)
 Rotation around global y-axis. More...
 
virtual void rotateAroundGlobalZ (Scalar radians)
 Rotation around global z-axis. More...
 
virtual void rotateAroundLocalAxis (const LocalVector &axis, Scalar radians)
 Rotation around arbitratry local axis. More...
 
virtual void rotateAroundLocalX (Scalar radians)
 Rotation around local x-axis. More...
 
virtual void rotateAroundLocalY (Scalar radians)
 Rotation around local y-axis. More...
 
virtual void rotateAroundLocalZ (Scalar radians)
 Rotation around local z-axis. More...
 
virtual void rotateInLocalFrame (const RotationType &rotation)
 Rotation intepreted in the local reference frame. More...
 
const RotationTyperotation () const
 Return change of orientation since the creation of the object. More...
 
void setAlignmentParameters (AlignmentParameters *dap)
 Set the AlignmentParameters. More...
 
void setMother (Alignable *mother)
 Assign mother to alignable. More...
 
void setSurvey (const SurveyDet *)
 Set survey info. More...
 
int size () const
 Return number of direct components. More...
 
const AlignableSurfacesurface () const
 Return the Surface (global position and orientation) of the object. More...
 
AlignmentSurfaceDeformationssurfaceDeformations () const
 Return surface deformations, sorted by DetId. More...
 
const SurveyDetsurvey () const
 Return survey info. More...
 
void update (align::ID, const AlignableSurface &)
 
virtual ~Alignable ()
 Destructor. More...
 

Private Attributes

AlignmentPositionErrortheAlignmentPositionError
 

Additional Inherited Members

- Public Types inherited from Alignable
typedef align::Alignables Alignables
 
enum  CompConstraintType { CompConstraintType::NONE, CompConstraintType::POSITION, CompConstraintType::POSITION_Z }
 
typedef align::GlobalVector GlobalVector
 
typedef align::LocalVector LocalVector
 
typedef align::PositionType PositionType
 
typedef align::RotationType RotationType
 
typedef align::Scalar Scalar
 
typedef align::StructureType StructureType
 
- Protected Types inherited from Alignable
template<class T >
using Cache = std::map< align::RunNumber, T >
 
- Protected Member Functions inherited from AlignableComposite
 AlignableComposite (const GeomDet *geomDet)
 Constructor from GeomDet, only for use in AlignableDet. More...
 
void setSurface (const AlignableSurface &s)
 
void update (const GeomDet *geomDet)
 
template<class T >
void update (T)=delete
 
- Protected Member Functions inherited from Alignable
void addDisplacement (const GlobalVector &displacement)
 
void addRotation (const RotationType &rotation)
 
virtual void updateMother (const GlobalVector &shift)
 
- Protected Attributes inherited from AlignableComposite
StructureType theStructureType
 
- Protected Attributes inherited from Alignable
CompConstraintType compConstraintType_ {CompConstraintType::NONE}
 
Cache< GlobalVectordisplacementsCache_
 
Cache< RotationTyperotationsCache_
 
Cache< AlignableSurfacesurfacesCache_
 
GlobalVector theCachedDisplacement
 
RotationType theCachedRotation
 
AlignableSurface theCachedSurface
 
Alignables theDeepComponents
 
DetId theDetId
 
GlobalVector theDisplacement
 
align::ID theId
 
RotationType theRotation
 
AlignableSurface theSurface
 

Detailed Description

An AlignableComposite corresponding to a composite GeomDet direct components are AlignableDetUnits or AlignableDets.

Definition at line 8 of file AlignableDet.h.

Constructor & Destructor Documentation

AlignableDet::AlignableDet ( const GeomDet geomDet,
bool  addComponents = true 
)

Constructor: If addComponents = true, creates components for geomDet's components, assuming they are GeomDetUnits

Definition at line 15 of file AlignableDet.cc.

References AlignableComposite::addComponent(), align::AlignableDetUnit, GeomDet::alignmentPositionError(), Alignable::compConstraintType_, GeomDet::components(), Exception, GeomDet::geographicalId(), Alignable::NONE, DetId::rawId(), setAlignmentPositionError(), GeomDet::surface(), Alignable::theSurface, and csvLumiCalc::unit.

15  :
16  AlignableComposite( geomDet ),
18 {
19  // ensure that the surface is not constrained to the average position of the
20  // components:
22 
23  if (geomDet->alignmentPositionError()) {
24  // false: do not propagate APE to (anyway not yet existing) daughters
25  this->setAlignmentPositionError(*(geomDet->alignmentPositionError()), false);
26  }
27 
28  if (addComponents) {
29  if ( geomDet->components().empty() ) { // Is a DetUnit
30  throw cms::Exception("BadHierarchy") << "[AlignableDet] GeomDet with DetId "
31  << geomDet->geographicalId().rawId()
32  << " has no components, use AlignableDetUnit.\n";
33  } else { // Push back all components
34  const std::vector<const GeomDet*>& geomDets = geomDet->components();
35  for (std::vector<const GeomDet*>::const_iterator idet = geomDets.begin();
36  idet != geomDets.end(); ++idet) {
37  const GeomDetUnit *unit = dynamic_cast<const GeomDetUnit*>(*idet);
38  if (!unit) {
39  throw cms::Exception("BadHierarchy")
40  << "[AlignableDet] component not GeomDetUnit, call with addComponents==false"
41  << " and build hierarchy yourself.\n"; // e.g. AlignableDTChamber
42  }
43  this->addComponent(new AlignableDetUnit(unit));
44  }
45  }
46  // Ensure that the surface is not screwed up by addComponent, it must stay the GeomDet's one:
47  theSurface = AlignableSurface(geomDet->surface());
48  } // end addComponents
49 }
AlignableComposite()
default constructor hidden
AlignmentPositionError * theAlignmentPositionError
Definition: AlignableDet.h:51
const Plane & surface() const
The nominal surface of the GeomDet.
Definition: GeomDet.h:42
void addComponent(Alignable *component) override
uint32_t rawId() const
get the raw id
Definition: DetId.h:43
DetId geographicalId() const
The label of this GeomDet.
Definition: GeomDet.h:79
virtual std::vector< const GeomDet * > components() const
Returns direct components, if any.
Definition: GeomDet.h:88
CompConstraintType compConstraintType_
Definition: Alignable.h:252
void setAlignmentPositionError(const AlignmentPositionError &ape, bool propagateDown) override
Set the AlignmentPositionError and, if (propagateDown), to all components.
AlignmentPositionError const * alignmentPositionError() const
Return pointer to alignment errors.
Definition: GeomDet.h:95
AlignableSurface theSurface
Definition: Alignable.h:243
AlignableDet::~AlignableDet ( )
override

Destructor.

Definition at line 53 of file AlignableDet.cc.

References theAlignmentPositionError.

54 {
55 
57 
58 }
AlignmentPositionError * theAlignmentPositionError
Definition: AlignableDet.h:51

Member Function Documentation

void AlignableDet::addAlignmentPositionError ( const AlignmentPositionError ape,
bool  propagateDown 
)
overridevirtual

Add (or set if it does not exist yet) the AlignmentPositionError, if (propagateDown), add also to all components

Reimplemented from AlignableComposite.

Definition at line 132 of file AlignableDet.cc.

References AlignableComposite::addAlignmentPositionError(), and theAlignmentPositionError.

Referenced by addAlignmentPositionErrorFromRotation().

133 {
134 
135  if ( !theAlignmentPositionError ) {
137  } else {
139  }
140 
141  this->AlignableComposite::addAlignmentPositionError( ape, propagateDown );
142 
143 }
void addAlignmentPositionError(const AlignmentPositionError &ape, bool propagateDown) override
AlignmentPositionError * theAlignmentPositionError
Definition: AlignableDet.h:51
void AlignableDet::addAlignmentPositionErrorFromRotation ( const RotationType rot,
bool  propagateDown 
)
overridevirtual

Add (or set if it does not exist yet) the AlignmentPositionError resulting from a rotation in the global reference frame, if (propagateDown), add also to all components

Reimplemented from AlignableComposite.

Definition at line 146 of file AlignableDet.cc.

References addAlignmentPositionError(), AlignableComposite::addAlignmentPositionErrorFromRotation(), PV3DBase< T, PVType, FrameType >::basicVector(), TkRotation< T >::multiplyInverse(), Alignable::surface(), AlignableSurface::toGlobal(), and ApeEstimator_cff::width.

148 {
149 
150  // average error calculated by movement of a local point at
151  // (xWidth/2,yLength/2,0) caused by the rotation rot
152  GlobalVector localPositionVector = surface().toGlobal( LocalVector(.5 * surface().width(), .5 * surface().length(), 0.) );
153 
154  const LocalVector::BasicVectorType& lpvgf = localPositionVector.basicVector();
155  GlobalVector gv( rot.multiplyInverse(lpvgf) - lpvgf );
156 
157  AlignmentPositionError ape( gv.x(),gv.y(),gv.z() );
158  this->addAlignmentPositionError( ape, propagateDown );
159 
161 
162 }
void addAlignmentPositionErrorFromRotation(const RotationType &rotation, bool propagateDown) override
align::LocalVector LocalVector
Definition: Alignable.h:36
const AlignableSurface & surface() const
Return the Surface (global position and orientation) of the object.
Definition: Alignable.h:135
align::GlobalPoints toGlobal(const align::LocalPoints &) const
Return in global coord given a set of local points.
void addAlignmentPositionError(const AlignmentPositionError &ape, bool propagateDown) override
const BasicVectorType & basicVector() const
Definition: PV3DBase.h:56
AlignmentErrorsExtended * AlignableDet::alignmentErrors ( void  ) const
overridevirtual

Return vector of alignment errors.

Reimplemented from AlignableComposite.

Definition at line 194 of file AlignableDet.cc.

References AlignableComposite::alignmentErrors(), asHepMatrix(), popcon2dropbox::copy(), Alignable::geomDetId(), AlignmentPositionError::globalError(), AlignmentErrorsExtended::m_alignError, GlobalErrorBaseExtended< T, ErrorWeightType >::matrix(), DetId::rawId(), and theAlignmentPositionError.

195 {
196 
197  AlignmentErrorsExtended* m_alignmentErrors = new AlignmentErrorsExtended();
198 
199  // Add associated alignment position error
200  uint32_t detId = this->geomDetId().rawId();
201  CLHEP::HepSymMatrix clhepSymMatrix(6,0);
202  if ( theAlignmentPositionError ) // Might not be set
204  AlignTransformErrorExtended transformError( clhepSymMatrix, detId );
205  m_alignmentErrors->m_alignError.push_back( transformError );
206 
207  // Add those from components
209  std::copy(compAlignmentErrs->m_alignError.begin(), compAlignmentErrs->m_alignError.end(),
210  std::back_inserter(m_alignmentErrors->m_alignError));
211  delete compAlignmentErrs;
212 
213 
214  return m_alignmentErrors;
215 }
CLHEP::HepMatrix asHepMatrix(const ROOT::Math::SMatrix< double, N1, N2, typename ROOT::Math::MatRepStd< double, N1, N2 > > &rm)
Definition: Migration.h:54
AlignmentPositionError * theAlignmentPositionError
Definition: AlignableDet.h:51
const GlobalErrorExtended & globalError() const
uint32_t rawId() const
get the raw id
Definition: DetId.h:43
AlignmentErrorsExtended * alignmentErrors() const override
Return vector of alignment errors.
const AlgebraicSymMatrix66 & matrix() const
std::vector< AlignTransformErrorExtended > m_alignError
const DetId & geomDetId() const
Definition: Alignable.h:186
const AlignmentPositionError* AlignableDet::alignmentPositionError ( ) const
inline

alignment position error - for checking only, otherwise use alignmentErrors() above!

Definition at line 47 of file AlignableDet.h.

References theAlignmentPositionError.

Referenced by AlignableDetOrUnitPtr::alignmentPositionError().

AlignmentPositionError * theAlignmentPositionError
Definition: AlignableDet.h:51
Alignments * AlignableDet::alignments ( void  ) const
overridevirtual

Return vector of alignment data.

Reimplemented from AlignableComposite.

Reimplemented in AlignableSiStripDet.

Definition at line 165 of file AlignableDet.cc.

References AlignableComposite::alignments(), popcon2dropbox::copy(), Alignable::geomDetId(), Alignable::globalPosition(), Alignable::globalRotation(), Alignments::m_align, DetId::rawId(), makeMuonMisalignmentScenario::rot, create_public_lumi_plots::transform, x, TkRotation< T >::xx(), TkRotation< T >::xy(), TkRotation< T >::xz(), y, TkRotation< T >::yx(), TkRotation< T >::yy(), TkRotation< T >::yz(), z, TkRotation< T >::zx(), TkRotation< T >::zy(), and TkRotation< T >::zz().

Referenced by AlignableSiStripDet::alignments().

166 {
167 
168  Alignments* m_alignments = new Alignments();
169  RotationType rot( this->globalRotation() );
170 
171  // Get position, rotation, detId
172  CLHEP::Hep3Vector clhepVector( globalPosition().x(), globalPosition().y(), globalPosition().z() );
173  CLHEP::HepRotation clhepRotation( CLHEP::HepRep3x3( rot.xx(), rot.xy(), rot.xz(),
174  rot.yx(), rot.yy(), rot.yz(),
175  rot.zx(), rot.zy(), rot.zz() ) );
176  uint32_t detId = this->geomDetId().rawId();
177 
178  AlignTransform transform( clhepVector, clhepRotation, detId );
179 
180  // Add to alignments container
181  m_alignments->m_align.push_back( transform );
182 
183  // Add those from components
184  Alignments *compAlignments = this->AlignableComposite::alignments();
185  std::copy(compAlignments->m_align.begin(), compAlignments->m_align.end(),
186  std::back_inserter(m_alignments->m_align));
187  delete compAlignments;
188 
189 
190  return m_alignments;
191 }
const RotationType & globalRotation() const
Return the global orientation of the object.
Definition: Alignable.h:141
std::vector< AlignTransform > m_align
Definition: Alignments.h:19
uint32_t rawId() const
get the raw id
Definition: DetId.h:43
Alignments * alignments() const override
Return alignment data.
align::RotationType RotationType
Definition: Alignable.h:34
const PositionType & globalPosition() const
Return the global position of the object.
Definition: Alignable.h:138
const DetId & geomDetId() const
Definition: Alignable.h:186
void AlignableDet::setAlignmentPositionError ( const AlignmentPositionError ape,
bool  propagateDown 
)
overridevirtual

Set the AlignmentPositionError and, if (propagateDown), to all components.

Reimplemented from AlignableComposite.

Definition at line 118 of file AlignableDet.cc.

References AlignableComposite::setAlignmentPositionError(), and theAlignmentPositionError.

Referenced by AlignableDet(), and update().

119 {
120 
123  else
125 
126  this->AlignableComposite::setAlignmentPositionError( ape, propagateDown );
127 
128 }
AlignmentPositionError * theAlignmentPositionError
Definition: AlignableDet.h:51
void setAlignmentPositionError(const AlignmentPositionError &ape, bool propagateDown) override
void AlignableDet::update ( const GeomDet geomDet,
bool  updateComponents = true 
)

Updater from GeomDet The given GeomDet id has to match the current id.

Definition at line 62 of file AlignableDet.cc.

References GeomDet::alignmentPositionError(), EnergyCorrector::c, AlCaHLTBitMon_QueryRunRegistry::comp, AlignableComposite::components(), GeomDet::components(), Exception, GeomDet::geographicalId(), DetId::rawId(), setAlignmentPositionError(), GeomDet::surface(), Alignable::theSurface, csvLumiCalc::unit, AlignableDetUnit::update(), and AlignableComposite::update().

Referenced by progressbar.ProgressBar::__next__(), MatrixUtil.Matrix::__setitem__(), MatrixUtil.Steps::__setitem__(), Vispa.Gui.VispaWidget.VispaWidget::autosize(), AlignableTrackerBuilder::buildStripDetectorAlignable(), Vispa.Views.LineDecayView.LineDecayContainer::createObject(), Vispa.Views.LineDecayView.LineDecayContainer::deselectAllObjects(), Vispa.Gui.VispaWidgetOwner.VispaWidgetOwner::deselectAllWidgets(), Vispa.Gui.VispaWidget.VispaWidget::enableAutosizing(), dqm-mbProfile.Profile::finish(), progressbar.ProgressBar::finish(), Vispa.Gui.MenuWidget.MenuWidget::leaveEvent(), Vispa.Gui.VispaWidgetOwner.VispaWidgetOwner::mouseMoveEvent(), Vispa.Gui.MenuWidget.MenuWidget::mouseMoveEvent(), Vispa.Views.LineDecayView.LineDecayContainer::mouseMoveEvent(), Vispa.Gui.VispaWidgetOwner.VispaWidgetOwner::mouseReleaseEvent(), Vispa.Views.LineDecayView.LineDecayContainer::objectMoved(), MatrixUtil.Steps::overwrite(), Vispa.Views.LineDecayView.LineDecayContainer::removeObject(), Vispa.Gui.ConnectableWidget.ConnectableWidget::removePorts(), Vispa.Gui.FindDialog.FindDialog::reset(), Vispa.Gui.PortConnection.PointToPointConnection::select(), Vispa.Gui.VispaWidget.VispaWidget::select(), Vispa.Views.LineDecayView.LineDecayContainer::select(), Vispa.Gui.VispaWidget.VispaWidget::setText(), Vispa.Gui.VispaWidget.VispaWidget::setTitle(), Vispa.Gui.ZoomableWidget.ZoomableWidget::setZoom(), Vispa.Views.LineDecayView.LineDecayContainer::setZoom(), AlignableCSCChamber::update(), and Vispa.Gui.PortConnection.PointToPointConnection::updateConnection().

63 {
65 
66  if (geomDet->alignmentPositionError()) {
67  // false: do not propagate APE to daughters (done by their update functions)
68  this->setAlignmentPositionError(*(geomDet->alignmentPositionError()), false);
69  }
70 
71  if (updateComponents) {
72  if (geomDet->components().empty() ) { // Is a DetUnit
73  throw cms::Exception("BadHierarchy")
74  << "[AlignableDet] GeomDet with DetId "
75  << geomDet->geographicalId().rawId()
76  << " has no components, use AlignableDetUnit.\n";
77  } else { // Push back all components
78  const auto& geomDets = geomDet->components();
79  for (const auto& idet: geomDets) {
80  auto unit = dynamic_cast<const GeomDetUnit*>(idet);
81  if (!unit) {
82  throw cms::Exception("BadHierarchy")
83  << "[AlignableDet] component not GeomDetUnit, call with "
84  << "updateComponents==false and build hierarchy yourself.\n";
85  // -> e.g. AlignableDTChamber
86  }
87 
88  const auto components = this->components();
89  auto comp =
90  std::find_if(components.begin(), components.end(),
91  [&unit](const auto& c) {
92  return c->id() == unit->geographicalId().rawId(); });
93 
94  if (comp != components.end()) {
95  auto aliDetUnit = dynamic_cast<AlignableDetUnit*>(*comp);
96  if (aliDetUnit) {
97  aliDetUnit->update(unit);
98  } else {
99  throw cms::Exception("LogicError")
100  << "[AlignableDet::update] cast to 'AlignableDetUnit*' failed "
101  << "while it should not\n";
102  }
103  } else {
104  throw cms::Exception("GeometryMismatch")
105  << "[AlignableDet::update] GeomDet with DetId "
106  << unit->geographicalId().rawId()
107  << " not found in current geometry.\n";
108  }
109  }
110  }
111  // Ensure that the surface is not screwed up by update of components, it must stay the GeomDet's one:
112  theSurface = AlignableSurface(geomDet->surface());
113  } // end updateComponents
114 }
const Plane & surface() const
The nominal surface of the GeomDet.
Definition: GeomDet.h:42
void update(const GeomDetUnit *geomDetUnit)
uint32_t rawId() const
get the raw id
Definition: DetId.h:43
DetId geographicalId() const
The label of this GeomDet.
Definition: GeomDet.h:79
Alignables components() const override
Return vector of direct components.
virtual std::vector< const GeomDet * > components() const
Returns direct components, if any.
Definition: GeomDet.h:88
void update(align::ID, StructureType aType, const RotationType &rot=RotationType())
void setAlignmentPositionError(const AlignmentPositionError &ape, bool propagateDown) override
Set the AlignmentPositionError and, if (propagateDown), to all components.
AlignmentPositionError const * alignmentPositionError() const
Return pointer to alignment errors.
Definition: GeomDet.h:95
AlignableSurface theSurface
Definition: Alignable.h:243

Member Data Documentation

AlignmentPositionError* AlignableDet::theAlignmentPositionError
private