The DataStructure stores : More...

#include <TopOpeBRepDS_DataStructure.hxx>

Public Member Functions
	TopOpeBRepDS_DataStructure ()

void	Init ()
	reset the data structure More...

Standard_Integer	AddSurface (const TopOpeBRepDS_Surface &S)
	Insert a new surface. Returns the index. More...

void	RemoveSurface (const Standard_Integer I)

Standard_Boolean	KeepSurface (const Standard_Integer I) const

Standard_Boolean	KeepSurface (TopOpeBRepDS_Surface &S) const

void	ChangeKeepSurface (const Standard_Integer I, const Standard_Boolean FindKeep)

void	ChangeKeepSurface (TopOpeBRepDS_Surface &S, const Standard_Boolean FindKeep)

Standard_Integer	AddCurve (const TopOpeBRepDS_Curve &S)
	Insert a new curve. Returns the index. More...

void	RemoveCurve (const Standard_Integer I)

Standard_Boolean	KeepCurve (const Standard_Integer I) const

Standard_Boolean	KeepCurve (const TopOpeBRepDS_Curve &C) const

void	ChangeKeepCurve (const Standard_Integer I, const Standard_Boolean FindKeep)

void	ChangeKeepCurve (TopOpeBRepDS_Curve &C, const Standard_Boolean FindKeep)

Standard_Integer	AddPoint (const TopOpeBRepDS_Point &PDS)
	Insert a new point. Returns the index. More...

Standard_Integer	AddPointSS (const TopOpeBRepDS_Point &PDS, const TopoDS_Shape &S1, const TopoDS_Shape &S2)
	Insert a new point. Returns the index. More...

void	RemovePoint (const Standard_Integer I)

Standard_Boolean	KeepPoint (const Standard_Integer I) const

Standard_Boolean	KeepPoint (const TopOpeBRepDS_Point &P) const

void	ChangeKeepPoint (const Standard_Integer I, const Standard_Boolean FindKeep)

void	ChangeKeepPoint (TopOpeBRepDS_Point &P, const Standard_Boolean FindKeep)

Standard_Integer	AddShape (const TopoDS_Shape &S)
	Insert a shape S. Returns the index. More...

Standard_Integer	AddShape (const TopoDS_Shape &S, const Standard_Integer I)
	Insert a shape S which ancestor is I = 1 or 2. Returns the index. More...

Standard_Boolean	KeepShape (const Standard_Integer I, const Standard_Boolean FindKeep=Standard_True) const

Standard_Boolean	KeepShape (const TopoDS_Shape &S, const Standard_Boolean FindKeep=Standard_True) const

void	ChangeKeepShape (const Standard_Integer I, const Standard_Boolean FindKeep)

void	ChangeKeepShape (const TopoDS_Shape &S, const Standard_Boolean FindKeep)

void	InitSectionEdges ()

Standard_Integer	AddSectionEdge (const TopoDS_Edge &E)

const TopOpeBRepDS_ListOfInterference &	SurfaceInterferences (const Standard_Integer I) const

TopOpeBRepDS_ListOfInterference &	ChangeSurfaceInterferences (const Standard_Integer I)

const TopOpeBRepDS_ListOfInterference &	CurveInterferences (const Standard_Integer I) const

TopOpeBRepDS_ListOfInterference &	ChangeCurveInterferences (const Standard_Integer I)

const TopOpeBRepDS_ListOfInterference &	PointInterferences (const Standard_Integer I) const

TopOpeBRepDS_ListOfInterference &	ChangePointInterferences (const Standard_Integer I)

const TopOpeBRepDS_ListOfInterference &	ShapeInterferences (const TopoDS_Shape &S, const Standard_Boolean FindKeep=Standard_True) const

TopOpeBRepDS_ListOfInterference &	ChangeShapeInterferences (const TopoDS_Shape &S)

const TopOpeBRepDS_ListOfInterference &	ShapeInterferences (const Standard_Integer I, const Standard_Boolean FindKeep=Standard_True) const

TopOpeBRepDS_ListOfInterference &	ChangeShapeInterferences (const Standard_Integer I)

const TopTools_ListOfShape &	ShapeSameDomain (const TopoDS_Shape &S) const

TopTools_ListOfShape &	ChangeShapeSameDomain (const TopoDS_Shape &S)

const TopTools_ListOfShape &	ShapeSameDomain (const Standard_Integer I) const

TopTools_ListOfShape &	ChangeShapeSameDomain (const Standard_Integer I)

TopOpeBRepDS_MapOfShapeData &	ChangeShapes ()

void	AddShapeSameDomain (const TopoDS_Shape &S, const TopoDS_Shape &SSD)

void	RemoveShapeSameDomain (const TopoDS_Shape &S, const TopoDS_Shape &SSD)

Standard_Integer	SameDomainRef (const Standard_Integer I) const

Standard_Integer	SameDomainRef (const TopoDS_Shape &S) const

void	SameDomainRef (const Standard_Integer I, const Standard_Integer Ref)

void	SameDomainRef (const TopoDS_Shape &S, const Standard_Integer Ref)

TopOpeBRepDS_Config	SameDomainOri (const Standard_Integer I) const

TopOpeBRepDS_Config	SameDomainOri (const TopoDS_Shape &S) const

void	SameDomainOri (const Standard_Integer I, const TopOpeBRepDS_Config Ori)

void	SameDomainOri (const TopoDS_Shape &S, const TopOpeBRepDS_Config Ori)

Standard_Integer	SameDomainInd (const Standard_Integer I) const

Standard_Integer	SameDomainInd (const TopoDS_Shape &S) const

void	SameDomainInd (const Standard_Integer I, const Standard_Integer Ind)

void	SameDomainInd (const TopoDS_Shape &S, const Standard_Integer Ind)

Standard_Integer	AncestorRank (const Standard_Integer I) const

Standard_Integer	AncestorRank (const TopoDS_Shape &S) const

void	AncestorRank (const Standard_Integer I, const Standard_Integer Ianc)

void	AncestorRank (const TopoDS_Shape &S, const Standard_Integer Ianc)

void	AddShapeInterference (const TopoDS_Shape &S, const Handle< TopOpeBRepDS_Interference > &I)

void	RemoveShapeInterference (const TopoDS_Shape &S, const Handle< TopOpeBRepDS_Interference > &I)

void	FillShapesSameDomain (const TopoDS_Shape &S1, const TopoDS_Shape &S2, const Standard_Boolean refFirst=Standard_True)

void	FillShapesSameDomain (const TopoDS_Shape &S1, const TopoDS_Shape &S2, const TopOpeBRepDS_Config c1, const TopOpeBRepDS_Config c2, const Standard_Boolean refFirst=Standard_True)

void	UnfillShapesSameDomain (const TopoDS_Shape &S1, const TopoDS_Shape &S2)

Standard_Integer	NbSurfaces () const

Standard_Integer	NbCurves () const

void	ChangeNbCurves (const Standard_Integer N)

Standard_Integer	NbPoints () const

Standard_Integer	NbShapes () const

Standard_Integer	NbSectionEdges () const

const TopOpeBRepDS_Surface &	Surface (const Standard_Integer I) const
	Returns the surface of index . More...

TopOpeBRepDS_Surface &	ChangeSurface (const Standard_Integer I)
	Returns the surface of index . More...

const TopOpeBRepDS_Curve &	Curve (const Standard_Integer I) const
	Returns the Curve of index . More...

TopOpeBRepDS_Curve &	ChangeCurve (const Standard_Integer I)
	Returns the Curve of index . More...

const TopOpeBRepDS_Point &	Point (const Standard_Integer I) const
	Returns the point of index . More...

TopOpeBRepDS_Point &	ChangePoint (const Standard_Integer I)
	Returns the point of index . More...

const TopoDS_Shape &	Shape (const Standard_Integer I, const Standard_Boolean FindKeep=Standard_True) const
	returns the shape of index I stored in the map myShapes, accessing a list of interference. More...

Standard_Integer	Shape (const TopoDS_Shape &S, const Standard_Boolean FindKeep=Standard_True) const
	returns the index of shape <S> stored in the map myShapes, accessing a list of interference. returns 0 if <S> is not in the map. More...

const TopoDS_Edge &	SectionEdge (const Standard_Integer I, const Standard_Boolean FindKeep=Standard_True) const

Standard_Integer	SectionEdge (const TopoDS_Edge &E, const Standard_Boolean FindKeep=Standard_True) const

Standard_Boolean	IsSectionEdge (const TopoDS_Edge &E, const Standard_Boolean FindKeep=Standard_True) const

Standard_Boolean	HasGeometry (const TopoDS_Shape &S) const
	Returns True if <S> has new geometries, i.e : True si : HasShape(S) True S a une liste d'interferences non vide. S = SOLID, FACE, EDGE : true/false S = SHELL, WIRE, VERTEX : false. More...

Standard_Boolean	HasShape (const TopoDS_Shape &S, const Standard_Boolean FindKeep=Standard_True) const
	Returns True if <S> est dans myShapes. More...

void	SetNewSurface (const TopoDS_Shape &F, const Handle< Geom_Surface > &S)

Standard_Boolean	HasNewSurface (const TopoDS_Shape &F) const

const Handle< Geom_Surface > &	NewSurface (const TopoDS_Shape &F) const

void	Isfafa (const Standard_Boolean isfafa)

Standard_Boolean	Isfafa () const

TopOpeBRepDS_IndexedDataMapOfShapeWithState &	ChangeMapOfShapeWithStateObj ()

TopOpeBRepDS_IndexedDataMapOfShapeWithState &	ChangeMapOfShapeWithStateTool ()

TopOpeBRepDS_IndexedDataMapOfShapeWithState &	ChangeMapOfShapeWithState (const TopoDS_Shape &aShape, Standard_Boolean &aFlag)

const TopOpeBRepDS_ShapeWithState &	GetShapeWithState (const TopoDS_Shape &aShape) const

TopTools_IndexedMapOfShape &	ChangeMapOfRejectedShapesObj ()

TopTools_IndexedMapOfShape &	ChangeMapOfRejectedShapesTool ()

Detailed Description

The DataStructure stores :

New geometries : points, curves, and surfaces. Topological shapes : vertices, edges, faces. The new geometries and the topological shapes have interferences.

Constructor & Destructor Documentation

TopOpeBRepDS_DataStructure::TopOpeBRepDS_DataStructure ( )

Member Function Documentation

Standard_Integer TopOpeBRepDS_DataStructure::AddCurve ( const TopOpeBRepDS_Curve & S )

Insert a new curve. Returns the index.

Standard_Integer TopOpeBRepDS_DataStructure::AddPoint ( const TopOpeBRepDS_Point & PDS )

Insert a new point. Returns the index.

Standard_Integer TopOpeBRepDS_DataStructure::AddPointSS	(	const TopOpeBRepDS_Point &	PDS,
		const TopoDS_Shape &	S1,
		const TopoDS_Shape &	S2
	)

Insert a new point. Returns the index.

Standard_Integer TopOpeBRepDS_DataStructure::AddSectionEdge ( const TopoDS_Edge & E )

Standard_Integer TopOpeBRepDS_DataStructure::AddShape ( const TopoDS_Shape & S )

Insert a shape S. Returns the index.

Standard_Integer TopOpeBRepDS_DataStructure::AddShape	(	const TopoDS_Shape &	S,
		const Standard_Integer	I
	)

Insert a shape S which ancestor is I = 1 or 2. Returns the index.

void TopOpeBRepDS_DataStructure::AddShapeInterference	(	const TopoDS_Shape &	S,
		const Handle< TopOpeBRepDS_Interference > &	I
	)

void TopOpeBRepDS_DataStructure::AddShapeSameDomain	(	const TopoDS_Shape &	S,
		const TopoDS_Shape &	SSD
	)

Standard_Integer TopOpeBRepDS_DataStructure::AddSurface ( const TopOpeBRepDS_Surface & S )

Insert a new surface. Returns the index.

Standard_Integer TopOpeBRepDS_DataStructure::AncestorRank ( const Standard_Integer I ) const

Standard_Integer TopOpeBRepDS_DataStructure::AncestorRank ( const TopoDS_Shape & S ) const

void TopOpeBRepDS_DataStructure::AncestorRank	(	const Standard_Integer	I,
		const Standard_Integer	Ianc
	)

void TopOpeBRepDS_DataStructure::AncestorRank	(	const TopoDS_Shape &	S,
		const Standard_Integer	Ianc
	)

TopOpeBRepDS_Curve& TopOpeBRepDS_DataStructure::ChangeCurve ( const Standard_Integer I )

Returns the Curve of index .

TopOpeBRepDS_ListOfInterference& TopOpeBRepDS_DataStructure::ChangeCurveInterferences ( const Standard_Integer I )

void TopOpeBRepDS_DataStructure::ChangeKeepCurve	(	const Standard_Integer	I,
		const Standard_Boolean	FindKeep
	)

void TopOpeBRepDS_DataStructure::ChangeKeepCurve	(	TopOpeBRepDS_Curve &	C,
		const Standard_Boolean	FindKeep
	)

void TopOpeBRepDS_DataStructure::ChangeKeepPoint	(	const Standard_Integer	I,
		const Standard_Boolean	FindKeep
	)

void TopOpeBRepDS_DataStructure::ChangeKeepPoint	(	TopOpeBRepDS_Point &	P,
		const Standard_Boolean	FindKeep
	)

void TopOpeBRepDS_DataStructure::ChangeKeepShape	(	const Standard_Integer	I,
		const Standard_Boolean	FindKeep
	)

void TopOpeBRepDS_DataStructure::ChangeKeepShape	(	const TopoDS_Shape &	S,
		const Standard_Boolean	FindKeep
	)

void TopOpeBRepDS_DataStructure::ChangeKeepSurface	(	const Standard_Integer	I,
		const Standard_Boolean	FindKeep
	)

void TopOpeBRepDS_DataStructure::ChangeKeepSurface	(	TopOpeBRepDS_Surface &	S,
		const Standard_Boolean	FindKeep
	)

TopTools_IndexedMapOfShape& TopOpeBRepDS_DataStructure::ChangeMapOfRejectedShapesObj ( )

TopTools_IndexedMapOfShape& TopOpeBRepDS_DataStructure::ChangeMapOfRejectedShapesTool ( )

TopOpeBRepDS_IndexedDataMapOfShapeWithState& TopOpeBRepDS_DataStructure::ChangeMapOfShapeWithState	(	const TopoDS_Shape &	aShape,
		Standard_Boolean &	aFlag
	)

TopOpeBRepDS_IndexedDataMapOfShapeWithState& TopOpeBRepDS_DataStructure::ChangeMapOfShapeWithStateObj ( )

TopOpeBRepDS_IndexedDataMapOfShapeWithState& TopOpeBRepDS_DataStructure::ChangeMapOfShapeWithStateTool ( )

void TopOpeBRepDS_DataStructure::ChangeNbCurves ( const Standard_Integer N )

TopOpeBRepDS_Point& TopOpeBRepDS_DataStructure::ChangePoint ( const Standard_Integer I )

Returns the point of index .

TopOpeBRepDS_ListOfInterference& TopOpeBRepDS_DataStructure::ChangePointInterferences ( const Standard_Integer I )

TopOpeBRepDS_ListOfInterference& TopOpeBRepDS_DataStructure::ChangeShapeInterferences ( const TopoDS_Shape & S )

TopOpeBRepDS_ListOfInterference& TopOpeBRepDS_DataStructure::ChangeShapeInterferences ( const Standard_Integer I )

TopOpeBRepDS_MapOfShapeData& TopOpeBRepDS_DataStructure::ChangeShapes ( )

TopTools_ListOfShape& TopOpeBRepDS_DataStructure::ChangeShapeSameDomain ( const TopoDS_Shape & S )

TopTools_ListOfShape& TopOpeBRepDS_DataStructure::ChangeShapeSameDomain ( const Standard_Integer I )

TopOpeBRepDS_Surface& TopOpeBRepDS_DataStructure::ChangeSurface ( const Standard_Integer I )

Returns the surface of index .

TopOpeBRepDS_ListOfInterference& TopOpeBRepDS_DataStructure::ChangeSurfaceInterferences ( const Standard_Integer I )

const TopOpeBRepDS_Curve& TopOpeBRepDS_DataStructure::Curve ( const Standard_Integer I ) const

Returns the Curve of index .

const TopOpeBRepDS_ListOfInterference& TopOpeBRepDS_DataStructure::CurveInterferences ( const Standard_Integer I ) const

void TopOpeBRepDS_DataStructure::FillShapesSameDomain	(	const TopoDS_Shape &	S1,
		const TopoDS_Shape &	S2,
		const Standard_Boolean	refFirst = `Standard_True`
	)

void TopOpeBRepDS_DataStructure::FillShapesSameDomain	(	const TopoDS_Shape &	S1,
		const TopoDS_Shape &	S2,
		const TopOpeBRepDS_Config	c1,
		const TopOpeBRepDS_Config	c2,
		const Standard_Boolean	refFirst = `Standard_True`
	)

const TopOpeBRepDS_ShapeWithState& TopOpeBRepDS_DataStructure::GetShapeWithState ( const TopoDS_Shape & aShape ) const

Standard_Boolean TopOpeBRepDS_DataStructure::HasGeometry ( const TopoDS_Shape & S ) const

Returns True if <S> has new geometries, i.e : True si : HasShape(S) True S a une liste d'interferences non vide. S = SOLID, FACE, EDGE : true/false S = SHELL, WIRE, VERTEX : false.

Standard_Boolean TopOpeBRepDS_DataStructure::HasNewSurface ( const TopoDS_Shape & F ) const

Standard_Boolean TopOpeBRepDS_DataStructure::HasShape	(	const TopoDS_Shape &	S,
		const Standard_Boolean	FindKeep = `Standard_True`
	)		const

Returns True if <S> est dans myShapes.

void TopOpeBRepDS_DataStructure::Init ( )

reset the data structure

void TopOpeBRepDS_DataStructure::InitSectionEdges ( )

void TopOpeBRepDS_DataStructure::Isfafa ( const Standard_Boolean isfafa )

Standard_Boolean TopOpeBRepDS_DataStructure::Isfafa ( ) const

Standard_Boolean TopOpeBRepDS_DataStructure::IsSectionEdge	(	const TopoDS_Edge &	E,
		const Standard_Boolean	FindKeep = `Standard_True`
	)		const

Standard_Boolean TopOpeBRepDS_DataStructure::KeepCurve ( const Standard_Integer I ) const

Standard_Boolean TopOpeBRepDS_DataStructure::KeepCurve ( const TopOpeBRepDS_Curve & C ) const

Standard_Boolean TopOpeBRepDS_DataStructure::KeepPoint ( const Standard_Integer I ) const

Standard_Boolean TopOpeBRepDS_DataStructure::KeepPoint ( const TopOpeBRepDS_Point & P ) const

Standard_Boolean TopOpeBRepDS_DataStructure::KeepShape	(	const Standard_Integer	I,
		const Standard_Boolean	FindKeep = `Standard_True`
	)		const

Standard_Boolean TopOpeBRepDS_DataStructure::KeepShape	(	const TopoDS_Shape &	S,
		const Standard_Boolean	FindKeep = `Standard_True`
	)		const

Standard_Boolean TopOpeBRepDS_DataStructure::KeepSurface ( const Standard_Integer I ) const

Standard_Boolean TopOpeBRepDS_DataStructure::KeepSurface ( TopOpeBRepDS_Surface & S ) const

Standard_Integer TopOpeBRepDS_DataStructure::NbCurves ( ) const

Standard_Integer TopOpeBRepDS_DataStructure::NbPoints ( ) const

Standard_Integer TopOpeBRepDS_DataStructure::NbSectionEdges ( ) const

Standard_Integer TopOpeBRepDS_DataStructure::NbShapes ( ) const

Standard_Integer TopOpeBRepDS_DataStructure::NbSurfaces ( ) const

const Handle< Geom_Surface >& TopOpeBRepDS_DataStructure::NewSurface ( const TopoDS_Shape & F ) const

const TopOpeBRepDS_Point& TopOpeBRepDS_DataStructure::Point ( const Standard_Integer I ) const

Returns the point of index .

const TopOpeBRepDS_ListOfInterference& TopOpeBRepDS_DataStructure::PointInterferences ( const Standard_Integer I ) const

void TopOpeBRepDS_DataStructure::RemoveCurve ( const Standard_Integer I )

void TopOpeBRepDS_DataStructure::RemovePoint ( const Standard_Integer I )

void TopOpeBRepDS_DataStructure::RemoveShapeInterference	(	const TopoDS_Shape &	S,
		const Handle< TopOpeBRepDS_Interference > &	I
	)

void TopOpeBRepDS_DataStructure::RemoveShapeSameDomain	(	const TopoDS_Shape &	S,
		const TopoDS_Shape &	SSD
	)

void TopOpeBRepDS_DataStructure::RemoveSurface ( const Standard_Integer I )

Standard_Integer TopOpeBRepDS_DataStructure::SameDomainInd ( const Standard_Integer I ) const

Standard_Integer TopOpeBRepDS_DataStructure::SameDomainInd ( const TopoDS_Shape & S ) const

void TopOpeBRepDS_DataStructure::SameDomainInd	(	const Standard_Integer	I,
		const Standard_Integer	Ind
	)

void TopOpeBRepDS_DataStructure::SameDomainInd	(	const TopoDS_Shape &	S,
		const Standard_Integer	Ind
	)

TopOpeBRepDS_Config TopOpeBRepDS_DataStructure::SameDomainOri ( const Standard_Integer I ) const

TopOpeBRepDS_Config TopOpeBRepDS_DataStructure::SameDomainOri ( const TopoDS_Shape & S ) const

void TopOpeBRepDS_DataStructure::SameDomainOri	(	const Standard_Integer	I,
		const TopOpeBRepDS_Config	Ori
	)

void TopOpeBRepDS_DataStructure::SameDomainOri	(	const TopoDS_Shape &	S,
		const TopOpeBRepDS_Config	Ori
	)

Standard_Integer TopOpeBRepDS_DataStructure::SameDomainRef ( const Standard_Integer I ) const

Standard_Integer TopOpeBRepDS_DataStructure::SameDomainRef ( const TopoDS_Shape & S ) const

void TopOpeBRepDS_DataStructure::SameDomainRef	(	const Standard_Integer	I,
		const Standard_Integer	Ref
	)

void TopOpeBRepDS_DataStructure::SameDomainRef	(	const TopoDS_Shape &	S,
		const Standard_Integer	Ref
	)

const TopoDS_Edge& TopOpeBRepDS_DataStructure::SectionEdge	(	const Standard_Integer	I,
		const Standard_Boolean	FindKeep = `Standard_True`
	)		const

Standard_Integer TopOpeBRepDS_DataStructure::SectionEdge	(	const TopoDS_Edge &	E,
		const Standard_Boolean	FindKeep = `Standard_True`
	)		const

void TopOpeBRepDS_DataStructure::SetNewSurface	(	const TopoDS_Shape &	F,
		const Handle< Geom_Surface > &	S
	)

const TopoDS_Shape& TopOpeBRepDS_DataStructure::Shape	(	const Standard_Integer	I,
		const Standard_Boolean	FindKeep = `Standard_True`
	)		const

returns the shape of index I stored in the map myShapes, accessing a list of interference.

Standard_Integer TopOpeBRepDS_DataStructure::Shape	(	const TopoDS_Shape &	S,
		const Standard_Boolean	FindKeep = `Standard_True`
	)		const

returns the index of shape <S> stored in the map myShapes, accessing a list of interference. returns 0 if <S> is not in the map.

const TopOpeBRepDS_ListOfInterference& TopOpeBRepDS_DataStructure::ShapeInterferences	(	const TopoDS_Shape &	S,
		const Standard_Boolean	FindKeep = `Standard_True`
	)		const

const TopOpeBRepDS_ListOfInterference& TopOpeBRepDS_DataStructure::ShapeInterferences	(	const Standard_Integer	I,
		const Standard_Boolean	FindKeep = `Standard_True`
	)		const

const TopTools_ListOfShape& TopOpeBRepDS_DataStructure::ShapeSameDomain ( const TopoDS_Shape & S ) const

const TopTools_ListOfShape& TopOpeBRepDS_DataStructure::ShapeSameDomain ( const Standard_Integer I ) const

const TopOpeBRepDS_Surface& TopOpeBRepDS_DataStructure::Surface ( const Standard_Integer I ) const

Returns the surface of index .

const TopOpeBRepDS_ListOfInterference& TopOpeBRepDS_DataStructure::SurfaceInterferences ( const Standard_Integer I ) const

void TopOpeBRepDS_DataStructure::UnfillShapesSameDomain	(	const TopoDS_Shape &	S1,
		const TopoDS_Shape &	S2
	)

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

TopOpeBRepDS_DataStructure.hxx

TopOpeBRepDS_DataStructure Class Reference

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation