BoundingBox Class Reference

Represent the smallest axis-aligne box containing a given object or region of space. More...

#include <Bounds.hpp>

Public Member Functions
	BoundingBox ()=default
	BoundingBox (const glm::vec3 &v0, const glm::vec3 &v1)
	BoundingBox (const glm::vec3 &v0, const glm::vec3 &v1, const glm::vec3 &v2)
void	merge (const BoundingBox &box)
void	merge (const glm::vec3 &point)
BoundingSphere	getSphere () const
glm::vec3	getSize () const
std::vector< glm::vec3 >	getCorners () const
std::vector< glm::vec4 >	getHomogeneousCorners () const
glm::vec3	getCentroid () const
BoundingBox	transformed (const glm::mat4 &trans) const
bool	contains (const glm::vec3 &point) const
bool	empty () const

Public Attributes
glm::vec3	minis = glm::vec3(std::numeric_limits<float>::max())
	Lower-back-left corner of the box.
glm::vec3	maxis = glm::vec3(std::numeric_limits<float>::lowest())
	Higher-top-right corner of the box.

Detailed Description

Represent the smallest axis-aligne box containing a given object or region of space.

Constructor & Destructor Documentation

BoundingBox() [1/3]

BoundingBox::BoundingBox ( )

default

Empty box constructor.

BoundingBox() [2/3]

BoundingBox::BoundingBox	(	const glm::vec3 &	v0,
		const glm::vec3 &	v1
	)

Corner-based box constructor.

Parameters

v0	first corner
v1	second corner

BoundingBox() [3/3]

BoundingBox::BoundingBox	(	const glm::vec3 &	v0,
		const glm::vec3 &	v1,
		const glm::vec3 &	v2
	)

Triangle-based box constructor.

Parameters

v0	first triangle vertex
v1	second triangle vertex
v2	third triangle vertex

Member Function Documentation

contains()

bool BoundingBox::contains

(

const glm::vec3 &

point

)

const

Indicates if a point is inside the bounding box.

Parameters

point

the point to check

Returns

true if the bounding box contains the point

empty()

bool BoundingBox::empty

(

)

const

Returns

true if no point has been added to the bounding box

getCentroid()

glm::vec3 BoundingBox::getCentroid

(

)

const

Query the center of the bounding box.

Returns

the centroid

getCorners()

std::vector< glm::vec3 > BoundingBox::getCorners

(

)

const

Query the positions of the eight corners of the box, in the following order (with m=mini, M=maxi): (m,m,m), (m,m,M), (m,M,m), (m,M,M), (M,m,m), (M,m,M), (M,M,m), (M,M,M)

Returns

a vector containing the box corners

getHomogeneousCorners()

std::vector< glm::vec4 > BoundingBox::getHomogeneousCorners

(

)

const

Query the homogeneous positions of the eight corners of the box, in the following order (with m=mini, M=maxi): (m,m,m,1), (m,m,M,1), (m,M,m,1), (m,M,M,1), (M,m,m,1), (M,m,M,1), (M,M,m,1), (M,M,M,1)

Returns

a vector containing the box corners

getSize()

glm::vec3 BoundingBox::getSize

(

)

const

Query the size of this box.

Returns

the size

getSphere()

BoundingSphere BoundingBox::getSphere

(

)

const

Query the bounding sphere of this box.

Returns

the bounding sphere

merge() [1/2]

void BoundingBox::merge

(

const BoundingBox &

box

)

Extends the current box by another one. The result is the bounding box of the two boxes union.

Parameters

box	the bounding box to include

merge() [2/2]

void BoundingBox::merge

(

const glm::vec3 &

point

)

Extends the current box by a point

Parameters

point

the point to include

transformed()

BoundingBox BoundingBox::transformed

(

const glm::mat4 &

trans

)

const

Compute the bounding box of the transformed current box.

Parameters

trans

the transformation to apply

Returns

the bounding box of the transformed box

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

• src/engine/resources/Bounds.hpp
• src/engine/resources/Bounds.cpp