ParaEngine::CShapeAABB Class Reference

AABB-related code. More...

#include <ShapeAABB.h>

Public Member Functions
	CShapeAABB (const CShapeBox &box)
	CShapeAABB (const Vector3 &center, const Vector3 &extents)
	CShapeAABB (const CShapeAABB *boxes, int nSize)
	CShapeAABB (const Vector3 *points, int nSize)
void	SetMinMax (const Vector3 &min, const Vector3 &max)
	Setups an AABB from min & max vectors. More...
void	SetCenterExtents (const Vector3 &c, const Vector3 &e)
	Setups an AABB from center & extents vectors. More...
void	SetEmpty ()
	Setups an empty AABB.
void	SetInvalid ()
	negative extents
void	SetPointAABB (const Vector3 &pt)
	Setups a point AABB.
float	GetSize () const
	Gets the size of the AABB. More...
Vector3	Point (int i) const
	get the i of the 8 corner points More...
void	Extend (const Vector3 &p)
	Extends the AABB. More...
void	Extend (const CShapeOBB &p)
	Extends the AABB. More...
void	ExtendByPointList (const Vector3 *points, int nSize)
	Extends the AABB. More...
void	ExtendByAABBList (const CShapeAABB *boxes, int nSize)
	Extends the AABB. More...
void	GetMin (Vector3 &min) const
	Get min point of the box.
void	GetMax (Vector3 &max) const
	Get max point of the box.
Vector3	GetMin () const
	Get min point of the box.
Vector3	GetMax () const
	Get max point of the box.
float	GetMin (DWORD axis) const
	Get component of the box's min point along a given axis.
float	GetMax (DWORD axis) const
	Get component of the box's max point along a given axis.
void	GetCenter (Vector3 &center) const
	Get box center.
void	GetExtents (Vector3 &extents) const
	Get box extents.
void	SetCenter (const Vector3 &center)
	Get box center.
void	SetExtents (const Vector3 &extents)
	Get box extents.
float	GetCenter (DWORD axis) const
	Get component of the box's center along a given axis.
Vector3 &	GetCenter ()
float	GetExtents (DWORD axis) const
	Get component of the box's extents along a given axis.
Vector3 &	GetExtents ()
void	GetDiagonal (Vector3 &diagonal) const
	Get box diagonal.
float	GetWidth () const
float	GetHeight () const
float	GetDepth () const
float	GetRadius ()
void	SetWidth (float fWidth)
void	SetHeight (float fHeight)
void	SetDepth (float fDepth)
float	GetVolume () const
	Volume.
BOOL	Intersect (const CShapeAABB &a) const
	Computes the intersection between two AABBs. More...
bool	GomezIntersect (const CShapeAABB &a)
	The standard intersection method. More...
BOOL	Intersect (const CShapeAABB &a, DWORD axis) const
	Computes the 1D-intersection between two CShapeAABBs, on a given axis. More...
bool	Intersect (float *hitDist, const Vector3 *origPt, const Vector3 *dir, int *pHitSide=NULL)
	ray AABB intersection More...
bool	IntersectOutside (float *hitDist, const Vector3 *origPt, const Vector3 *dir, int *pHitSide=NULL)
	ray AABB intersection More...
void	Rotate (const Matrix4 &mtx, CShapeAABB &aabb) const
	Recomputes the CShapeAABB after an arbitrary transform by a 4x4 matrix. More...
BOOL	IsValid () const
	Checks the CShapeAABB is valid. More...
CShapeAABB &	operator*= (float s)
	Operator for CShapeAABB *= float. Scales the extents, keeps same center.
CShapeAABB &	operator/= (float s)
	Operator for CShapeAABB /= float. Scales the extents, keeps same center.
CShapeAABB &	operator+= (const Vector3 &trans)
	Operator for CShapeAABB += Vector3. Translates the box.

Detailed Description

AABB-related code.

(axis-aligned bounding box). Use CShapeBox, if one wants min, max box.

Member Function Documentation

Extend() [1/2]

void ParaEngine::CShapeAABB::Extend

(

const Vector3 &

p

)

Extends the AABB.

Parameters

p	[in] the next point

Extend() [2/2]

void ParaEngine::CShapeAABB::Extend

(

const CShapeOBB &

p

)

Extends the AABB.

ExtendByAABBList()

void CShapeAABB::ExtendByAABBList	(	const CShapeAABB *	boxes,
		int	nSize
	)

Extends the AABB.

ExtendByPointList()

void CShapeAABB::ExtendByPointList	(	const Vector3 *	points,
		int	nSize
	)

Extends the AABB.

GetSize()

float CShapeAABB::GetSize

(

)

const

Gets the size of the AABB.

The size is defined as the longest extent.

Returns

the size of the AABB

GomezIntersect()

bool CShapeAABB::GomezIntersect

(

const CShapeAABB &

a

)

The standard intersection method.

Just here to check its speed against the one above.

Parameters

a	[in] the other CShapeAABB

Returns

true on intersection

Intersect() [1/3]

BOOL CShapeAABB::Intersect

(

const CShapeAABB &

a

)

const

Computes the intersection between two AABBs.

Parameters

a	[in] the other AABB

Returns

true on intersection

Intersect() [2/3]

BOOL CShapeAABB::Intersect	(	const CShapeAABB &	a,
		DWORD	axis
	)		const

Computes the 1D-intersection between two CShapeAABBs, on a given axis.

Parameters

a	[in] the other CShapeAABB
axis	[in] the axis (0, 1, 2)

Returns

true on intersection

Intersect() [3/3]

bool CShapeAABB::Intersect	(	float *	hitDist,
		const Vector3 *	origPt,
		const Vector3 *	dir,
		int *	pHitSide = NULL
	)

ray AABB intersection

Parameters

pHitSide

0 negativeX,1 positiveX,2 NZ,3 PZ,4 NY, 5PY

Returns

: true if ray is inside AABB

IntersectOutside()

bool ParaEngine::CShapeAABB::IntersectOutside	(	float *	hitDist,
		const Vector3 *	origPt,
		const Vector3 *	dir,
		int *	pHitSide = NULL
	)

ray AABB intersection

Parameters

pHitSide

0 negativeX,1 positiveX,2 NZ,3 PZ,4 NY, 5PY

Returns

: always false if ray is inside AABB

IsValid()

BOOL CShapeAABB::IsValid

(

)

const

Checks the CShapeAABB is valid.

Returns

true if the box is valid

Point()

Vector3 ParaEngine::CShapeAABB::Point ( int  i ) const

inline

get the i of the 8 corner points

Parameters

i

0-7

Rotate()

void CShapeAABB::Rotate	(	const Matrix4 &	mtx,
		CShapeAABB &	aabb
	)		const

Recomputes the CShapeAABB after an arbitrary transform by a 4x4 matrix.

Parameters

mtx	[in] the transform matrix
aabb	[out] the transformed CShapeAABB [can be *this]

SetCenterExtents()

void ParaEngine::CShapeAABB::SetCenterExtents ( const Vector3 &  c, const Vector3 &  e  )

inline

Setups an AABB from center & extents vectors.

Parameters

c	[in] the center point
e	[in] the extents vector

SetMinMax()

void ParaEngine::CShapeAABB::SetMinMax ( const Vector3 &  min, const Vector3 &  max  )

inline

Setups an AABB from min & max vectors.

Parameters

min	[in] the min point
max	[in] the max point

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

• Client/trunk/ParaEngineClient/math/ShapeAABB.h
• Client/trunk/ParaEngineClient/math/ShapeAABB.cpp