This structure implements the boundary nodes of an axis-aligned bounding box. More...

#include <CCollisionAABBBox.h>

Public Member Functions
	cCollisionAABBBox ()
	Default constructor of cCollisionAABBBox. More...

	cCollisionAABBBox (const cVector3d &a_min, const cVector3d &a_max)
	Constructor of cCollisionAABBBox. More...

virtual	~cCollisionAABBBox ()
	Destructor of cCollisionAABBBox. More...

cVector3d	getCenter () const
	This method returns the center of the boundary box. More...

cVector3d	getExtent () const
	This method returns the extent (half the width) of the boundary box. More...

void	setCenter (const cVector3d &a_center)
	This method sets the center of the boundary box. More...

void	setExtent (const cVector3d &a_extent)
	This method sets the extent (half the width) of the boundary box. More...

void	setValue (const cVector3d &a_min, const cVector3d &a_max)
	This method initializes the boundary box by passing a minimum and maximum point. More...

bool	intersect (const cCollisionAABBBox &a_box) const
	This method determines whether this box and an input box passed as argument intersect each other. More...

bool	intersect (const cVector3d &a_segmentPointA, const cVector3d &a_segmentPointB) const
	This method determines whether the given ray intersects the boundary box. More...

bool	contains (const cVector3d &a_point) const
	This method tests whether this box contains a point passed as argument. More...

void	enclose (const cCollisionAABBBox &a_boxA, const cCollisionAABBBox &a_boxB)
	This method initializes the boundary box to bound two given boundary boxes passed as argument. More...

void	enclose (const cVector3d &a_point)
	This method resizes the boundary box to bound a new point passed as argument. More...

void	enclose (const cCollisionAABBBox &a_box)
	This method resizes the boundary box to bound a new point passed as argument. More...

void	setEmpty ()
	This method empties this boundary box. More...

double	getLowerX () const
	This method returns the smallest coordinate along X axis. More...

double	getUpperX () const
	This method returns the largest coordinate along X axis. More...

double	getLowerY () const
	This method returns the smallest coordinate along Y axis. More...

double	getUpperY () const
	This method returns the largest coordinate along Y axis. More...

double	getLowerZ () const
	This returns the smallest coordinate along Z axis. More...

double	getUpperZ () const
	This method return the largest coordinate along Z axis. More...

int	getLongestAxis () const
	This method returns the index of the longest axis of the boundary box. More...

void	render ()
	This method renders graphically the edges of the boundary box. More...

Public Attributes
cVector3d	m_center
	The center of the boundary box. More...

cVector3d	m_extent
	The extent (half the width) of the boundary box. More...

cVector3d	m_min
	The minimum point (along each axis) of the boundary box. More...

cVector3d	m_max
	The maximum point (along each axis) of the boundary box. More...

Detailed Description

This structure implements the data variables and methods necessary to model an axis-aligned bounding box. These methods are used by the general AABB collision detection algorithm (See class cCollisionAABB).

Constructor & Destructor Documentation

chai3d::cCollisionAABBBox::cCollisionAABBBox ( )

inline

chai3d::cCollisionAABBBox::cCollisionAABBBox	(	const cVector3d &	a_min,
		const cVector3d &	a_max
	)

inline

virtual chai3d::cCollisionAABBBox::~cCollisionAABBBox ( )

inlinevirtual

Member Function Documentation

cVector3d chai3d::cCollisionAABBBox::getCenter ( ) const

inline

This method returns the center of the boundary box.

Returns: Center of boundary box.

cVector3d chai3d::cCollisionAABBBox::getExtent ( ) const

inline

This method returns the extent (half the width) of the boundary box.

Returns: Extent of boundary box

void chai3d::cCollisionAABBBox::setCenter ( const cVector3d & a_center )

inline

This method sets the center of the boundary box.

Parameters

a_center Center of boundary box.

void chai3d::cCollisionAABBBox::setExtent ( const cVector3d & a_extent )

inline

This method sets the extent (half the width) of the boundary box.

Parameters

a_extent Boundary box extent.

void chai3d::cCollisionAABBBox::setValue	(	const cVector3d &	a_min,
		const cVector3d &	a_max
	)

inline

This method initializes the boundary box by passing a minimum and maximum point passed as arguments.

Parameters

a_min	Minimum point of boundary box.
a_max	Maximum point of boundary box.

bool chai3d::cCollisionAABBBox::intersect ( const cCollisionAABBBox & a_box ) const

inline

This method determines whether this box and an input box passed as argument intersect each other.

Parameters

a_box Input box.

Returns: true if the input box overlaps this box, false otherwise.

bool chai3d::cCollisionAABBBox::intersect	(	const cVector3d &	a_segmentPointA,
		const cVector3d &	a_segmentPointB
	)		const

inline

This method determines whether the given ray intersects the boundary box. Based on code by Andrew Woo from "Graphics Gems", Academic Press, 1990.

Parameters

a_segmentPointA	Initial point of segment.
a_segmentPointB	End point of segment.

Returns: true if line segment intersects the boundary box, false otherwise.

bool chai3d::cCollisionAABBBox::contains ( const cVector3d & a_point ) const

inline

This method tests whether this box contains a point a_point passed as argument.

Parameters

a_point Point to be tested.

Returns: true if this box contains this point, false otherwise.

void chai3d::cCollisionAABBBox::enclose	(	const cCollisionAABBBox &	a_boxA,
		const cCollisionAABBBox &	a_boxB
	)

inline

This method initializes the boundary box to bound two given boundary boxes passed as argument.

Parameters

a_boxA	The first boundary box to be enclosed.
a_boxB	The second boundary box to be enclosed.

void chai3d::cCollisionAABBBox::enclose ( const cVector3d & a_point )

inline

This method resizes the boundary box to bound a new point a_point passed as argument.

Parameters

a_point Point to be enclosed.

void chai3d::cCollisionAABBBox::enclose ( const cCollisionAABBBox & a_box )

inline

This method resizes the boundary box to bound a new point passed as argument.

Parameters

a_box Box to be enclosed in this boundary box.

void chai3d::cCollisionAABBBox::setEmpty ( )

inline

This method empties this boundary box.

double chai3d::cCollisionAABBBox::getLowerX ( ) const

inline

This method returns the smallest coordinate along X axis.

Returns: Smallest coordinate along X axis.

double chai3d::cCollisionAABBBox::getUpperX ( ) const

inline

This method returns the largest coordinate along X axis.

Returns: Largest coordinate along X axis.

double chai3d::cCollisionAABBBox::getLowerY ( ) const

inline

This method returns the smallest coordinate along Y axis.

Returns: Smallest coordinate along Y axis.

double chai3d::cCollisionAABBBox::getUpperY ( ) const

inline

This method returns the largest coordinate along Y axis.

Returns: Largest coordinate along Y axis.

double chai3d::cCollisionAABBBox::getLowerZ ( ) const

inline

This returns the smallest coordinate along Z axis.

Returns: Smallest coordinate along Z axis.

double chai3d::cCollisionAABBBox::getUpperZ ( ) const

inline

This method return the largest coordinate along Z axis.

Returns: Largest coordinate along Z axis.

int chai3d::cCollisionAABBBox::getLongestAxis ( ) const

inline

This method returns the index of the longest axis of the boundary box.

Returns: Index of the longest axis of the box.

void chai3d::cCollisionAABBBox::render ( )

inline

This method renders graphically using OpenGL the edges of the boundary box.

Member Data Documentation

cVector3d chai3d::cCollisionAABBBox::m_center

cVector3d chai3d::cCollisionAABBBox::m_extent

cVector3d chai3d::cCollisionAABBBox::m_min

cVector3d chai3d::cCollisionAABBBox::m_max

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

CCollisionAABBBox.h

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation