SbBox2f Class Reference
[Basics]

2D box class. More...

#include <Inventor/SbBox.h>

List of all members.

Public Member Functions
	SbBox2f ()
	SbBox2f (float xmin, float ymin, float xmax, float ymax)
	SbBox2f (const SbVec2f &_min, const SbVec2f &_max)
	~SbBox2f ()
const SbVec2f &	getMin () const
const SbVec2f &	getMax () const
SbVec2f	getCenter () const
void	extendBy (const SbVec2f &pt)
void	extendBy (const SbBox2f &r)
SbBool	intersect (const SbVec2f &pt) const
SbBool	intersect (const SbBox2f &bb) const
SbBox2f	intersection (const SbBox2f &box) const
void	setBounds (float xmin, float ymin, float xmax, float ymax)
void	setBounds (const SbVec2f &_min, const SbVec2f &_max)
void	getBounds (float &xmin, float &ymin, float &xmax, float &ymax) const
void	getBounds (SbVec2f &_min, SbVec2f &_max) const
SbVec2f	getClosestPoint (const SbVec2f &point) const
void	getOrigin (float &originX, float &originY) const
void	getSize (float &sizeX, float &sizeY) const
SbVec2f	getSize () const
float	getAspectRatio () const
void	makeEmpty ()
SbBool	isEmpty () const
SbBool	hasArea () const
Friends
int	operator== (const SbBox2f &b1, const SbBox2f &b2)
int	operator!= (const SbBox2f &b1, const SbBox2f &b2)

---

Detailed Description

2D box class.

2D box which has planes parallel to the major axes and is specified by two points (specified as floating point) on a diagonal. This class is part of the standard Open Inventor datatype classes and is used as input and output to geometry operations.

SEE ALSO

SbBox3f, SbXfBox3f, SbBox2s, SbVec3f, SbVec2f, SbVec2s, SbMatrix

---

Constructor & Destructor Documentation

SbBox2f::SbBox2f

(

)

[inline]

Constructor for a 2D float box.

The box is initially empty.

SbBox2f::SbBox2f	(	float	xmin,
		float	ymin,
		float	xmax,
		float	ymax
	)			[inline]

Constructor for a 2D float box.

xmin , ymin , xmax , and ymax are the bounds of the box.

SbBox2f::SbBox2f	(	const SbVec2f &	_min,
		const SbVec2f &	_max
	)			[inline]

Constructor for a 2D float box.

m_min and m_max are the corners of the diagonal that defines the box.

SbBox2f::~SbBox2f

(

)

[inline]

Destructor.

---

Member Function Documentation

void SbBox2f::extendBy

(

const SbBox2f &

r

)

Extends this box (if necessary) to contain the specified box.

void SbBox2f::extendBy

(

const SbVec2f &

pt

)

Extends this box (if necessary) to contain the specified point.

float SbBox2f::getAspectRatio

(

)

const [inline]

Gets box aspect ratio.

void SbBox2f::getBounds	(	SbVec2f &	_min,
		SbVec2f &	_max
	)			const [inline]

Gets the corners of the box.

void SbBox2f::getBounds	(	float &	xmin,
		float &	ymin,
		float &	xmax,
		float &	ymax
	)			const [inline]

Gets the corners of the box.

SbVec2f SbBox2f::getCenter

(

)

const

Returns the center of the box.

SbVec2f SbBox2f::getClosestPoint

(

const SbVec2f &

point

)

const

Returns the closest point on the box to the given point.

(Returns the point on the center of the Z face if passed the center.)

const SbVec2f& SbBox2f::getMax

(

)

const [inline]

Returns the maximum point of the box.

const SbVec2f& SbBox2f::getMin

(

)

const [inline]

Returns the minimum point of the box.

void SbBox2f::getOrigin	(	float &	originX,
		float &	originY
	)			const [inline]

Gets box origin.

SbVec2f SbBox2f::getSize

(

void

)

const [inline]

Return box size.

void SbBox2f::getSize	(	float &	sizeX,
		float &	sizeY
	)			const [inline]

Gets box size.

SbBool SbBox2f::hasArea

(

)

const [inline]

Returns TRUE if both dimensions of the box have positive size, and FALSE otherwise.

SbBool SbBox2f::intersect

(

const SbBox2f &

bb

)

const

Returns TRUE if the specified box intersects this box.

SbBool SbBox2f::intersect

(

const SbVec2f &

pt

)

const

Returns TRUE if the specified point intersects this box.

SbBox2f SbBox2f::intersection

(

const SbBox2f &

box

)

const

Returns the intersection of the specified box with this box.

Returned box is empty if there is no intersection.

SbBool SbBox2f::isEmpty

(

)

const [inline]

Returns TRUE if the box is empty, and FALSE otherwise. Note: Setting the box to all zeros does not make it "empty". Use the makeEmpty() method. (This method only returns true if the maximum X value is less than the minimum X value.)

void SbBox2f::makeEmpty

(

)

Makes an empty box.

void SbBox2f::setBounds	(	const SbVec2f &	_min,
		const SbVec2f &	_max
	)			[inline]

Sets the corners of the box.

void SbBox2f::setBounds	(	float	xmin,
		float	ymin,
		float	xmax,
		float	ymax
	)			[inline]

Sets the corners of the box.

---

Friends And Related Function Documentation

int operator!=	(	const SbBox2f &	b1,
		const SbBox2f &	b2
	)			[friend]

Inequality comparison.

int operator==	(	const SbBox2f &	b1,
		const SbBox2f &	b2
	)			[friend]

Equality comparison.

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

• Inventor/SbBox.h