CollisionVolumeOBB Class Reference

Represents an Oriented Bounding Box (OBB) collision volume. More...

#include <CollisionVolumeOBB.h>

Inheritance diagram for CollisionVolumeOBB:

Public Member Functions
	CollisionVolumeOBB (const CollisionVolumeOBB &)=delete
CollisionVolumeOBB &	operator= (const CollisionVolumeOBB &)=delete
void	ComputeData (Model *mod, const Matrix &mat) override
	Computes the OBB data from a model and transformation matrix.
const Vect &	GetCenter () const
	Gets the center of the OBB in world space.
const Vect &	GetHalfDiagonal () const
	Gets the half-diagonal (half-extents) of the OBB in world space.
const Matrix &	GetWorldMatrix () const
	Gets the world matrix representing the OBB's orientation and position.
const Vect	GetMin () const
	Gets the minimum point of the OBB in world space.
const Vect	GetMax () const
	Gets the maximum point of the OBB in world space.
Model *	GetModel () const
	Gets the model associated with this OBB.
void	DebugView (const Vect &col) const override
	Visualizes the OBB for debugging purposes.
bool	IntersectAccept (const CollisionVolume &other) const override
	Accepts a collision test with another collision volume (double dispatch).
bool	IntersectVisit (const CollisionVolumeBSphere &other) const override
	Tests intersection with a bounding sphere.
bool	IntersectVisit (const CollisionVolumeAABB &other) const override
	Tests intersection with an axis-aligned bounding box (AABB).
bool	IntersectVisit (const CollisionVolumeOBB &other) const override
	Tests intersection with another OBB.
void	ComputeDataFromMinMax (const Vect &center, const Vect &halfDiagonal)
	Sets the OBB data from a center and half-diagonal in world space.
VolumeType	GetType () const override
	Gets the type of this collision volume.
Public Member Functions inherited from CollisionVolume
	CollisionVolume (const CollisionVolume &)=delete
CollisionVolume &	operator= (const CollisionVolume &)=delete
Public Member Functions inherited from Align16
void *	operator new (size_t, void *p) noexcept
void *	operator new (size_t size) noexcept
void	operator delete (void *p)
void *	operator new[] (size_t size) noexcept
void	operator delete[] (void *p)
void *	operator new (size_t size, int _BlockUse, char const *_FileName, int _LineNumber) noexcept
void	operator delete (void *p, int _BlockUse, char const *_FileName, int _LineNumber)
void *	operator new[] (size_t size, int _BlockUse, char const *_FileName, int _LineNumber) noexcept
void	operator delete[] (void *p, int _BlockUse, char const *_FileName, int _LineNumber)

Private Attributes
Vect	center
	Center of the OBB in world space.
Vect	halfDiagonal
	Half-diagonal (half-extents) of the OBB in world space.
Matrix	worldMatrix
	World matrix for OBB orientation and position.
Model *	pColModel
	Pointer to the associated model.
Vect	localHalfDiagonal
	Half-diagonal in local/model space.
Vect	localCenter
	Center in local/model space.

Detailed Description

Represents an Oriented Bounding Box (OBB) collision volume.

The CollisionVolumeOBB class implements an oriented bounding box for collision detection. An OBB is a rectangular box that can be arbitrarily rotated in 3D space, defined by its center, half-diagonal (half-extents), and orientation (world matrix). This class provides methods to compute the OBB from a model and transformation matrix, retrieve its properties, and perform intersection tests with other collision volumes.

Typical usage involves calling ComputeData() to initialize the OBB from a model and world matrix, then using intersection methods for collision queries.

See also

CollisionVolume, CollisionVolumeAABB, CollisionVolumeBSphere, SUNENGINEMathTools

Member Function Documentation

ComputeData()

void CollisionVolumeOBB::ComputeData ( Model * mod, const Matrix & mat )

overridevirtual

Computes the OBB data from a model and transformation matrix.

Parameters

mod	Pointer to the model.
mat	The world transformation matrix.

This method calculates the OBB's center, half-diagonal, and orientation in world space based on the model's local AABB and the provided transformation matrix.

Implements CollisionVolume.

Here is the call graph for this function:

ComputeDataFromMinMax()

void CollisionVolumeOBB::ComputeDataFromMinMax	(	const Vect &	center,
		const Vect &	halfDiagonal )

Sets the OBB data from a center and half-diagonal in world space.

Parameters

center	The center of the OBB.
halfDiagonal	The half-diagonal (half-extents) of the OBB.

This method is useful for constructing an OBB from explicit min/max or center/half-diagonal values.

DebugView()

void CollisionVolumeOBB::DebugView ( const Vect & col ) const

overridevirtual

Visualizes the OBB for debugging purposes.

Parameters

col	The color to use for visualization.

Implements CollisionVolume.

Here is the call graph for this function:

GetCenter()

const Vect & CollisionVolumeOBB::GetCenter

(

)

const

Gets the center of the OBB in world space.

Returns

Reference to the center vector.

Here is the caller graph for this function:

GetHalfDiagonal()

const Vect & CollisionVolumeOBB::GetHalfDiagonal

(

)

const

Gets the half-diagonal (half-extents) of the OBB in world space.

Returns

Reference to the half-diagonal vector.

Here is the caller graph for this function:

GetMax()

const Vect CollisionVolumeOBB::GetMax

(

)

const

Gets the maximum point of the OBB in world space.

Returns

The maximum corner vector.

GetMin()

const Vect CollisionVolumeOBB::GetMin

(

)

const

Gets the minimum point of the OBB in world space.

Returns

The minimum corner vector.

GetModel()

Model * CollisionVolumeOBB::GetModel

(

)

const

Gets the model associated with this OBB.

Returns

Pointer to the model.

GetType()

VolumeType CollisionVolumeOBB::GetType ( ) const

inlineoverridevirtual

Gets the type of this collision volume.

Returns

The volume type (VolumeType::OBB).

Reimplemented from CollisionVolume.

GetWorldMatrix()

const Matrix & CollisionVolumeOBB::GetWorldMatrix

(

)

const

Gets the world matrix representing the OBB's orientation and position.

Returns

Reference to the world matrix.

Here is the caller graph for this function:

IntersectAccept()

bool CollisionVolumeOBB::IntersectAccept ( const CollisionVolume & other ) const

overridevirtual

Accepts a collision test with another collision volume (double dispatch).

Parameters

other

The other collision volume.

Returns

True if the volumes intersect, false otherwise.

Implements CollisionVolume.

IntersectVisit() [1/3]

bool CollisionVolumeOBB::IntersectVisit ( const CollisionVolumeAABB & other ) const

overridevirtual

Tests intersection with an axis-aligned bounding box (AABB).

Parameters

other

The AABB volume.

Returns

True if the OBB and AABB intersect, false otherwise.

Implements CollisionVolume.

Here is the call graph for this function:

IntersectVisit() [2/3]

bool CollisionVolumeOBB::IntersectVisit ( const CollisionVolumeBSphere & other ) const

overridevirtual

Tests intersection with a bounding sphere.

Parameters

other

The bounding sphere volume.

Returns

True if the OBB and sphere intersect, false otherwise.

Implements CollisionVolume.

Here is the call graph for this function:

IntersectVisit() [3/3]

bool CollisionVolumeOBB::IntersectVisit ( const CollisionVolumeOBB & other ) const

overridevirtual

Tests intersection with another OBB.

Parameters

other

The other OBB volume.

Returns

True if the OBBs intersect, false otherwise.

Implements CollisionVolume.

Here is the call graph for this function:

---

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

• CollisionVolumeOBB.h
• CollisionVolumeOBB.cpp