collision_checking::OBB Class Reference

OBB class. More...

#include <obb.h>

List of all members.

Classes
struct	SimpleQuaternion
	Simple quaternion class used in OBB. More...
Public Member Functions
Vec3f	center () const
	Center of the OBB.
bool	contain (const Vec3f &p) const
	Check whether the OBB contains a point.
BVH_REAL	depth () const
	Depth of the OBB.
BVH_REAL	distance (const OBB &other) const
	The distance between two OBB Not implemented.
BVH_REAL	height () const
	Height of the OBB.
	OBB ()
OBB	operator+ (const OBB &other) const
	Return the merged OBB of current OBB and the other one.
OBB &	operator+= (const OBB &other)
	Merge the OBB and another OBB.
OBB &	operator+= (const Vec3f &p)
	A simple way to merge the OBB and a point, not compact.
bool	overlap (const OBB &other, OBB &overlap_part) const
	Check collision between two OBB and return the overlap part. For OBB, we return nothing, as the overlap part of two obbs usually is not an obb.
bool	overlap (const OBB &other) const
	Check collision between two OBB.
BVH_REAL	size () const
	Size of the OBB, for split order.
BVH_REAL	volume () const
	Volume of the OBB.
BVH_REAL	width () const
	Width of the OBB.
Static Public Member Functions
static bool	obbDisjoint (const Vec3f B[3], const Vec3f &T, const Vec3f &a, const Vec3f &b)
Public Attributes
Vec3f	axis [3]
	Orientation of OBB.
Vec3f	extent
	Half dimensions of OBB.
Vec3f	To
	center of OBB
Private Member Functions
void	computeVertices (Vec3f vertex[8]) const
Static Private Member Functions
static void	getCovariance (Vec3f *ps, int n, Vec3f M[3])
	Compute the variance of the vertex points of two OBBs.
static void	getExtentAndCenter (Vec3f *ps, int n, Vec3f axis[3], Vec3f &center, Vec3f &extent)
	Compute the extent and center for the OBB merge two smaller OBBs.
static void	Meigen (Vec3f a[3], BVH_REAL dout[3], Vec3f vout[3])
	Compute the eigen values and vectors for matrix a.
static OBB	merge_largedist (const OBB &b1, const OBB &b2)
	OBB merge method when the centers of two smaller OBB are far away.
static OBB	merge_smalldist (const OBB &b1, const OBB &b2)
	OBB merge method when the centers of two smaller OBB are close.

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Detailed Description

OBB class.

Definition at line 51 of file obb.h.

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Constructor & Destructor Documentation

collision_checking::OBB::OBB

(

)

[inline]

Definition at line 93 of file obb.h.

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Member Function Documentation

Vec3f collision_checking::OBB::center

(

)

const [inline]

Center of the OBB.

Definition at line 153 of file obb.h.

void collision_checking::OBB::computeVertices

(

Vec3f

vertex[8]

)

const [private]

Compute the 8 vertices of a OBB

Definition at line 479 of file obb.cpp.

bool collision_checking::OBB::contain

(

const Vec3f &

p

)

const [inline]

Check whether the OBB contains a point.

Definition at line 154 of file obb.cpp.

BVH_REAL collision_checking::OBB::depth

(

)

const [inline]

Depth of the OBB.

Definition at line 135 of file obb.h.

BVH_REAL collision_checking::OBB::distance

(

const OBB &

other

)

const [inline]

The distance between two OBB Not implemented.

Definition at line 161 of file obb.h.

void collision_checking::OBB::getCovariance	(	Vec3f *	ps,
		int	n,
		Vec3f	M[3]
	)			[static, private]

Compute the variance of the vertex points of two OBBs.

Definition at line 495 of file obb.cpp.

void collision_checking::OBB::getExtentAndCenter	(	Vec3f *	ps,
		int	n,
		Vec3f	axis[3],
		Vec3f &	center,
		Vec3f &	extent
	)			[static, private]

Compute the extent and center for the OBB merge two smaller OBBs.

Definition at line 610 of file obb.cpp.

BVH_REAL collision_checking::OBB::height

(

)

const [inline]

Height of the OBB.

Definition at line 129 of file obb.h.

void collision_checking::OBB::Meigen	(	Vec3f	a[3],
		BVH_REAL	dout[3],
		Vec3f	vout[3]
	)			[static, private]

Compute the eigen values and vectors for matrix a.

Definition at line 523 of file obb.cpp.

OBB collision_checking::OBB::merge_largedist	(	const OBB &	b1,
		const OBB &	b2
	)			[static, private]

OBB merge method when the centers of two smaller OBB are far away.

Definition at line 643 of file obb.cpp.

OBB collision_checking::OBB::merge_smalldist	(	const OBB &	b1,
		const OBB &	b2
	)			[static, private]

OBB merge method when the centers of two smaller OBB are close.

Definition at line 690 of file obb.cpp.

bool collision_checking::OBB::obbDisjoint	(	const Vec3f	B[3],
		const Vec3f &	T,
		const Vec3f &	a,
		const Vec3f &	b
	)			[static]

Kernel check whether two OBB are disjoint

Definition at line 202 of file obb.cpp.

OBB collision_checking::OBB::operator+

(

const OBB &

other

)

const

Return the merged OBB of current OBB and the other one.

Definition at line 186 of file obb.cpp.

OBB& collision_checking::OBB::operator+=

(

const OBB &

other

)

[inline]

Merge the OBB and another OBB.

Definition at line 113 of file obb.h.

OBB & collision_checking::OBB::operator+=

(

const Vec3f &

p

)

A simple way to merge the OBB and a point, not compact.

A simple way to add new point to the OBB, not compact.

Definition at line 173 of file obb.cpp.

bool collision_checking::OBB::overlap	(	const OBB &	other,
		OBB &	overlap_part
	)			const [inline]

Check collision between two OBB and return the overlap part. For OBB, we return nothing, as the overlap part of two obbs usually is not an obb.

Definition at line 101 of file obb.h.

bool collision_checking::OBB::overlap

(

const OBB &

other

)

const

Check collision between two OBB.

Definition at line 137 of file obb.cpp.

BVH_REAL collision_checking::OBB::size

(

)

const [inline]

Size of the OBB, for split order.

Definition at line 147 of file obb.h.

BVH_REAL collision_checking::OBB::volume

(

)

const [inline]

Volume of the OBB.

Definition at line 141 of file obb.h.

BVH_REAL collision_checking::OBB::width

(

)

const [inline]

Width of the OBB.

Definition at line 123 of file obb.h.

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Member Data Documentation

Vec3f collision_checking::OBB::axis[3]

Orientation of OBB.

Definition at line 85 of file obb.h.

Vec3f collision_checking::OBB::extent

Half dimensions of OBB.

Definition at line 91 of file obb.h.

Vec3f collision_checking::OBB::To

center of OBB

Definition at line 88 of file obb.h.

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

• obb.h
• obb.cpp