The class describes the Oriented Bounding Box (OBB), much tighter enclosing volume for the shape than the Axis Aligned Bounding Box (AABB). The OBB is defined by a center of the box, the axes and the halves of its three dimensions. The OBB can be used more effectively than AABB as a rejection mechanism for non-interfering objects. More...

#include <Bnd_OBB.hxx>

Public Member Functions
	Bnd_OBB ()
	Empty constructor. More...

	Bnd_OBB (const gp_Pnt &theCenter, const gp_Dir &theXDirection, const gp_Dir &theYDirection, const gp_Dir &theZDirection, const Standard_Real theHXSize, const Standard_Real theHYSize, const Standard_Real theHZSize)
	Constructor taking all defining parameters. More...

	Bnd_OBB (const Bnd_Box &theBox)
	Constructor to create OBB from AABB. More...

void	ReBuild (const TColgp_Array1OfPnt &theListOfPoints, const TColStd_Array1OfReal *theListOfTolerances=0)
	Created new OBB covering every point in theListOfPoints. Tolerance of every such point is set by *theListOfTolerances array. If this array is not void (not null-pointer) then the resulted Bnd_OBB will be enlarged using tolerances of points lying on the box surface. More...

void	SetCenter (const gp_Pnt &theCenter)
	Sets the center of OBB. More...

void	SetXComponent (const gp_Dir &theXDirection, const Standard_Real theHXSize)
	Sets the X component of OBB - direction and size. More...

void	SetYComponent (const gp_Dir &theYDirection, const Standard_Real theHYSize)
	Sets the Y component of OBB - direction and size. More...

void	SetZComponent (const gp_Dir &theZDirection, const Standard_Real theHZSize)
	Sets the Z component of OBB - direction and size. More...

const gp_XYZ &	Center () const
	Returns the center of OBB. More...

const gp_XYZ &	XDirection () const
	Returns the X Direction of OBB. More...

const gp_XYZ &	YDirection () const
	Returns the Y Direction of OBB. More...

const gp_XYZ &	ZDirection () const
	Returns the Z Direction of OBB. More...

Standard_Real	XHSize () const
	Returns the X Dimension of OBB. More...

Standard_Real	YHSize () const
	Returns the Y Dimension of OBB. More...

Standard_Real	ZHSize () const
	Returns the Z Dimension of OBB. More...

Standard_Boolean	IsVoid () const
	Checks if the box is empty. More...

void	SetVoid ()
	Clears this box. More...

void	SetAABox (const Standard_Boolean &theFlag)
	Sets the flag for axes aligned box. More...

Standard_Boolean	IsAABox () const
	Returns TRUE if the box is axes aligned. More...

void	Enlarge (const Standard_Real theGapAdd)
	Enlarges the box with the given value. More...

Standard_Boolean	GetVertex (gp_Pnt theP[8]) const
	Returns the array of vertices in <this>. The local coordinate of the vertex depending on the index of the array are follow: Index == 0: (-XHSize(), -YHSize(), -ZHSize()) Index == 1: ( XHSize(), -YHSize(), -ZHSize()) Index == 2: (-XHSize(), YHSize(), -ZHSize()) Index == 3: ( XHSize(), YHSize(), -ZHSize()) Index == 4: (-XHSize(), -YHSize(), ZHSize()) Index == 5: ( XHSize(), -YHSize(), ZHSize()) Index == 6: (-XHSize(), YHSize(), ZHSize()) Index == 7: ( XHSize(), YHSize(), ZHSize()). More...

Standard_Real	SquareExtent () const
	Returns square diagonal of this box. More...

Standard_Boolean	IsOut (const Bnd_OBB &theOther) const
	Check if the box do not interfere the other box. More...

Standard_Boolean	IsOut (const gp_Pnt &theP) const
	Check if the point is inside of <this>. More...

Standard_Boolean	IsCompletelyInside (const Bnd_OBB &theOther) const
	Check if the theOther is completely inside *this. More...

void	Add (const Bnd_OBB &theOther)
	Rebuilds this in order to include all previous objects (which it was created from) and theOther. More...

void	Add (const gp_Pnt &theP)
	Rebuilds this in order to include all previous objects (which it was created from) and theP. More...

Protected Member Functions
void	ProcessOnePoint (const gp_Pnt &theP)

Detailed Description

The class describes the Oriented Bounding Box (OBB), much tighter enclosing volume for the shape than the Axis Aligned Bounding Box (AABB). The OBB is defined by a center of the box, the axes and the halves of its three dimensions. The OBB can be used more effectively than AABB as a rejection mechanism for non-interfering objects.

Constructor & Destructor Documentation

◆ Bnd_OBB() [1/3]

Bnd_OBB::Bnd_OBB ( )

inline

Empty constructor.

◆ Bnd_OBB() [2/3]

Bnd_OBB::Bnd_OBB	(	const gp_Pnt &	theCenter,
		const gp_Dir &	theXDirection,
		const gp_Dir &	theYDirection,
		const gp_Dir &	theZDirection,
		const Standard_Real	theHXSize,
		const Standard_Real	theHYSize,
		const Standard_Real	theHZSize
	)

inline

Constructor taking all defining parameters.

◆ Bnd_OBB() [3/3]

Bnd_OBB::Bnd_OBB ( const Bnd_Box & theBox )

inline

Constructor to create OBB from AABB.

Member Function Documentation

◆ Add() [1/2]

void Bnd_OBB::Add ( const Bnd_OBB & theOther )

Rebuilds this in order to include all previous objects (which it was created from) and theOther.

◆ Add() [2/2]

void Bnd_OBB::Add ( const gp_Pnt & theP )

Rebuilds this in order to include all previous objects (which it was created from) and theP.

◆ Center()

const gp_XYZ& Bnd_OBB::Center ( ) const

inline

Returns the center of OBB.

◆ Enlarge()

void Bnd_OBB::Enlarge ( const Standard_Real theGapAdd )

inline

Enlarges the box with the given value.

◆ GetVertex()

Standard_Boolean Bnd_OBB::GetVertex ( gp_Pnt theP[8] ) const

inline

Returns the array of vertices in <this>. The local coordinate of the vertex depending on the index of the array are follow: Index == 0: (-XHSize(), -YHSize(), -ZHSize()) Index == 1: ( XHSize(), -YHSize(), -ZHSize()) Index == 2: (-XHSize(), YHSize(), -ZHSize()) Index == 3: ( XHSize(), YHSize(), -ZHSize()) Index == 4: (-XHSize(), -YHSize(), ZHSize()) Index == 5: ( XHSize(), -YHSize(), ZHSize()) Index == 6: (-XHSize(), YHSize(), ZHSize()) Index == 7: ( XHSize(), YHSize(), ZHSize()).

◆ IsAABox()

Standard_Boolean Bnd_OBB::IsAABox ( ) const

inline

Returns TRUE if the box is axes aligned.

◆ IsCompletelyInside()

Standard_Boolean Bnd_OBB::IsCompletelyInside ( const Bnd_OBB & theOther ) const

Check if the theOther is completely inside *this.

◆ IsOut() [1/2]

Standard_Boolean Bnd_OBB::IsOut ( const Bnd_OBB & theOther ) const

Check if the box do not interfere the other box.

◆ IsOut() [2/2]

Standard_Boolean Bnd_OBB::IsOut ( const gp_Pnt & theP ) const

Check if the point is inside of <this>.

◆ IsVoid()

Standard_Boolean Bnd_OBB::IsVoid ( ) const

inline

Checks if the box is empty.

◆ ProcessOnePoint()

void Bnd_OBB::ProcessOnePoint ( const gp_Pnt & theP )

inlineprotected

◆ ReBuild()

void Bnd_OBB::ReBuild	(	const TColgp_Array1OfPnt &	theListOfPoints,
		const TColStd_Array1OfReal *	theListOfTolerances = `0`
	)

Created new OBB covering every point in theListOfPoints. Tolerance of every such point is set by *theListOfTolerances array. If this array is not void (not null-pointer) then the resulted Bnd_OBB will be enlarged using tolerances of points lying on the box surface.

◆ SetAABox()

void Bnd_OBB::SetAABox ( const Standard_Boolean & theFlag )

inline

Sets the flag for axes aligned box.

◆ SetCenter()

void Bnd_OBB::SetCenter ( const gp_Pnt & theCenter )

inline

Sets the center of OBB.

◆ SetVoid()

void Bnd_OBB::SetVoid ( )

inline

Clears this box.

◆ SetXComponent()

void Bnd_OBB::SetXComponent	(	const gp_Dir &	theXDirection,
		const Standard_Real	theHXSize
	)

inline

Sets the X component of OBB - direction and size.

◆ SetYComponent()

void Bnd_OBB::SetYComponent	(	const gp_Dir &	theYDirection,
		const Standard_Real	theHYSize
	)

inline

Sets the Y component of OBB - direction and size.

◆ SetZComponent()

void Bnd_OBB::SetZComponent	(	const gp_Dir &	theZDirection,
		const Standard_Real	theHZSize
	)

inline

Sets the Z component of OBB - direction and size.

◆ SquareExtent()

Standard_Real Bnd_OBB::SquareExtent ( ) const

inline

Returns square diagonal of this box.

◆ XDirection()

const gp_XYZ& Bnd_OBB::XDirection ( ) const

inline

Returns the X Direction of OBB.

◆ XHSize()

Standard_Real Bnd_OBB::XHSize ( ) const

inline

Returns the X Dimension of OBB.

◆ YDirection()

const gp_XYZ& Bnd_OBB::YDirection ( ) const

inline

Returns the Y Direction of OBB.

◆ YHSize()

Standard_Real Bnd_OBB::YHSize ( ) const

inline

Returns the Y Dimension of OBB.

◆ ZDirection()

const gp_XYZ& Bnd_OBB::ZDirection ( ) const

inline

Returns the Z Direction of OBB.

◆ ZHSize()

Standard_Real Bnd_OBB::ZHSize ( ) const

inline

Returns the Z Dimension of OBB.

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

Bnd_OBB.hxx

Bnd_OBB Class Reference

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ Bnd_OBB() [1/3]

◆ Bnd_OBB() [2/3]

◆ Bnd_OBB() [3/3]

Member Function Documentation

◆ Add() [1/2]

◆ Add() [2/2]

◆ Center()

◆ Enlarge()

◆ GetVertex()

◆ IsAABox()

◆ IsCompletelyInside()

◆ IsOut() [1/2]

◆ IsOut() [2/2]

◆ IsVoid()

◆ ProcessOnePoint()

◆ ReBuild()

◆ SetAABox()

◆ SetCenter()

◆ SetVoid()

◆ SetXComponent()

◆ SetYComponent()

◆ SetZComponent()

◆ SquareExtent()

◆ XDirection()

◆ XHSize()

◆ YDirection()

◆ YHSize()

◆ ZDirection()

◆ ZHSize()