Ult::OBB Class Reference

#include <OBB.h>

Public Member Functions
	OBB ()
	OBB (const OBB &obb)
	OBB (const BoundingBox &aabb)
void	Calculate (const Vector3D *vertices, const int numVerts)
void	Calculate (const BoundingBox &aabb)
void	Transform (const OBB &obb, const Matrix4x4 &mat)
void	ObjectTransform (const OBB &obb, const Matrix4x4 &mat)
void	ProjectionInterval (const Vector3D &axis, float &center, float &ext, float &min, float &max)
unsigned int	GetSupport (const Vector3D &axis, Vector3D *contacts)
Vector3D	GetFaceNormal (const int index) const
Vector3D	GetEdgeDirection (const int index) const
Vector3D	GetCenterPos () const
void	SetCenter (const Vector3D &center)
float	GetHalfAxis1 () const
float	GetHalfAxis2 () const
float	GetHalfAxis3 () const
float	GetHalfAxis (const int index) const
void	SetHalfAxis1 (const float val)
void	SetHalfAxis2 (const float val)
void	SetHalfAxis3 (const float val)
Vector3D	GetAxis1 () const
Vector3D	GetAxis2 () const
Vector3D	GetAxis3 () const
Vector3D	GetAxis (const int index) const
void	SetAxis1 (const Vector3D &axis)
void	SetAxis2 (const Vector3D &axis)
void	SetAxis3 (const Vector3D &axis)

Public Attributes
Vector3D	mCenter
float	mHalfAxis1
float	mHalfAxis2
float	mHalfAxis3
Vector3D	mAxis1
Vector3D	mAxis2
Vector3D	mAxis3

Detailed Description

Oriented Bounding Box

Constructor & Destructor Documentation

OBB() [1/3]

Ult::OBB::OBB

(

)

OBB constructor.

OBB() [2/3]

Ult::OBB::OBB

(

const OBB &

obb

)

OBB copy constructor.

OBB() [3/3]

Ult::OBB::OBB

(

const BoundingBox &

aabb

)

OBB constructor from an axis-aligned bounding box.

Member Function Documentation

Calculate() [1/2]

void Ult::OBB::Calculate

(

const BoundingBox &

aabb

)

Initialize the OBB from an axis-aligned bounding box.

Calculate() [2/2]

void Ult::OBB::Calculate	(	const Vector3D *	vertices,
		const int	numVerts )

Initialize the OBB to encapsulate all of the input points.

GetAxis()

Vector3D Ult::OBB::GetAxis ( const int index ) const

inline

Returns the OBB axis at the given index.

GetAxis1()

Vector3D Ult::OBB::GetAxis1 ( ) const

inline

Returns the first OBB axis.

GetAxis2()

Vector3D Ult::OBB::GetAxis2 ( ) const

inline

Returns the second OBB axis.

GetAxis3()

Vector3D Ult::OBB::GetAxis3 ( ) const

inline

Returns the third OBB axis.

GetCenterPos()

Vector3D Ult::OBB::GetCenterPos ( ) const

inline

Returns the center point of this OBB.

GetEdgeDirection()

Vector3D Ult::OBB::GetEdgeDirection ( const int index ) const

inline

GetFaceNormal()

Vector3D Ult::OBB::GetFaceNormal ( const int index ) const

inline

Get the normal of the face at the given index.

GetHalfAxis()

float Ult::OBB::GetHalfAxis ( const int index ) const

inline

Returns the half-axis of the OBB at the given index.

GetHalfAxis1()

float Ult::OBB::GetHalfAxis1 ( ) const

inline

Returns the first half-axis of the OBB.

GetHalfAxis2()

float Ult::OBB::GetHalfAxis2 ( ) const

inline

Returns the second half-axis of the OBB.

GetHalfAxis3()

float Ult::OBB::GetHalfAxis3 ( ) const

inline

Returns the third half-axis of the OBB.

GetSupport()

unsigned int Ult::OBB::GetSupport	(	const Vector3D &	axis,
		Vector3D *	contacts )

Calculate the number of and contact points and store them in contacts. Returns the number of contact points (up to 4, so contacts must be at least length 4).

ObjectTransform()

void Ult::OBB::ObjectTransform	(	const OBB &	obb,
		const Matrix4x4 &	mat )

Translate and rotate the OBB using the inverse input matrix, including translation for the OBB axes, and store the result in this OBB.

ProjectionInterval()

void Ult::OBB::ProjectionInterval	(	const Vector3D &	axis,
		float &	center,
		float &	ext,
		float &	min,
		float &	max )

Calculate the projection inverval of the input axis with this OBB and store the results in center, ext, min, max.

SetAxis1()

void Ult::OBB::SetAxis1 ( const Vector3D & axis )

inline

Sets the first OBB axis.

SetAxis2()

void Ult::OBB::SetAxis2 ( const Vector3D & axis )

inline

Sets the second OBB axis.

SetAxis3()

void Ult::OBB::SetAxis3 ( const Vector3D & axis )

inline

Sets the third OBB axis.

SetCenter()

void Ult::OBB::SetCenter ( const Vector3D & center )

inline

Sets the center point of this OBB

SetHalfAxis1()

void Ult::OBB::SetHalfAxis1 ( const float val )

inline

Sets the first half-axis of this OBB.

SetHalfAxis2()

void Ult::OBB::SetHalfAxis2 ( const float val )

inline

Sets the second half-axis of this OBB.

SetHalfAxis3()

void Ult::OBB::SetHalfAxis3 ( const float val )

inline

Sets the third half-axis of this OBB.

Transform()

void Ult::OBB::Transform	(	const OBB &	obb,
		const Matrix4x4 &	mat )

Translate and rotate the OBB using the input matrix and store the result in this OBB.

Member Data Documentation

mAxis1

Vector3D Ult::OBB::mAxis1

The axes of the OBB.

mAxis2

Vector3D Ult::OBB::mAxis2

mAxis3

Vector3D Ult::OBB::mAxis3

mCenter

Vector3D Ult::OBB::mCenter

The center point of the OBB.

mHalfAxis1

float Ult::OBB::mHalfAxis1

The half-axis values of the OBB.

mHalfAxis2

float Ult::OBB::mHalfAxis2

mHalfAxis3

float Ult::OBB::mHalfAxis3

---

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

• include/Ult/Math/OBB.h
• src/Math/OBB.cpp