SbBox2d Class Reference

The SbBox2d class is a 2 dimensional box with double precision corner coordinates.This box class is used by many other classes in Coin for data exchange and storage. It provides two box corners with double precision coordinates, which is among other things useful for representing screen or canvas dimensions in normalized coordinates. More...

#include <Inventor/SbBox2d.h>

Public Member Functions
	SbBox2d (void)
	SbBox2d (double xmin, double ymin, double xmax, double ymax)
	SbBox2d (const SbVec2d &minpoint, const SbVec2d &maxpoint)
	SbBox2d (const SbBox2f &box)
	SbBox2d (const SbBox2s &box)
	SbBox2d (const SbBox2i32 &box)
SbBox2d &	setBounds (double xmin, double ymin, double xmax, double ymax)
SbBox2d &	setBounds (const SbVec2d &minpoint, const SbVec2d &maxpoint)
SbBox2d &	setBounds (const SbBox2f &box)
SbBox2d &	setBounds (const SbBox2s &box)
SbBox2d &	setBounds (const SbBox2i32 &box)
void	getBounds (double &xmin, double &ymin, double &xmax, double &ymax) const
void	getBounds (SbVec2d &minpoint, SbVec2d &maxpoint) const
const SbVec2d &	getMin (void) const
SbVec2d &	getMin (void)
const SbVec2d &	getMax (void) const
SbVec2d &	getMax (void)
void	extendBy (const SbVec2d &point)
void	extendBy (const SbBox2d &box)
void	makeEmpty (void)
SbBool	isEmpty (void) const
SbBool	hasArea (void) const
SbBool	intersect (const SbVec2d &point) const
SbBool	intersect (const SbBox2d &box) const
SbVec2d	getClosestPoint (const SbVec2d &p) const
SbBool	findIntersection (const SbVec2d &a, const SbVec2d &b, SbVec2d &ia, SbVec2d &ib) const
SbVec2d	getCenter (void) const
void	getOrigin (double &originX, double &originY) const
void	getSize (double &sizeX, double &sizeY) const
SbVec2d	getSize (void) const
double	getAspectRatio (void) const

Related Functions
(Note that these are not member functions.)
int	operator== (const SbBox2d &b1, const SbBox2d &b2)
int	operator!= (const SbBox2d &b1, const SbBox2d &b2)

Detailed Description

The SbBox2d class is a 2 dimensional box with double precision corner coordinates.

This box class is used by many other classes in Coin for data exchange and storage. It provides two box corners with double precision coordinates, which is among other things useful for representing screen or canvas dimensions in normalized coordinates.

This class is a Coin extension.

See also

SbBox2s, SbBox2f, SbBox3s, SbBox3f, SbBox3d, SbXfBox3f.

Since

Coin 2.0

TGS Inventor 2.6

Constructor & Destructor Documentation

SbBox2d::SbBox2d ( void  )

inline

The default constructor makes an empty box.

SbBox2d::SbBox2d ( double  xmin, double  ymin, double  xmax, double  ymax  )

inline

Constructs a box with the given corners.

xmin should be less than xmax and ymin should be less than ymax if you want to make a valid box.

SbBox2d::SbBox2d ( const SbVec2d &  min, const SbVec2d &  max  )

inline

Constructs a box with the given lower left and upper right corners.

The coordinates of min should be less than the coordinates of max if you want to make a valid box.

Member Function Documentation

SbBox2d & SbBox2d::setBounds ( double  xmin, double  ymin, double  xmax, double  ymax  )

inline

Reset the boundaries of the box.

xmin should be less than xmax and ymin should be less than ymax if you want to make a valid box.

Returns reference to self.

See also

getBounds().

SbBox2d & SbBox2d::setBounds ( const SbVec2d &  min, const SbVec2d &  max  )

inline

Reset the boundaries of the box with the given corners.

The coordinates of min should be less than the coordinates of max if you want to make a valid box.

Returns reference to self.

See also

getBounds().

SbBox2d & SbBox2d::setBounds

(

const SbBox2f &

box

)

Reset the boundaries of the box with the given box boundaries.

Returns reference to self.

See also

getBounds()

SbBox2d & SbBox2d::setBounds

(

const SbBox2s &

box

)

Reset the boundaries of the box with the given box boundaries.

Returns reference to self.

See also

getBounds()

SbBox2d & SbBox2d::setBounds

(

const SbBox2i32 &

box

)

Reset the boundaries of the box with the given box boundaries.

Returns reference to self.

See also

getBounds()

void SbBox2d::getBounds ( double &  xmin, double &  ymin, double &  xmax, double &  ymax  ) const

inline

Returns the box boundaries.

See also

setBounds(), getMin(), getMax().

void SbBox2d::getBounds ( SbVec2d &  min, SbVec2d &  max  ) const

inline

Returns the box min and max corner points.

See also

setBounds(), getMin(), getMax().

const SbVec2d & SbBox2d::getMin ( void  ) const

inline

Returns the lower left corner of the box.

See also

getOrigin(), getMax().

SbVec2d & SbBox2d::getMin ( void  )

inline

Returns the lower left corner of the box.

See also

getOrigin(), getMax().

const SbVec2d & SbBox2d::getMax ( void  ) const

inline

Returns the upper right corner of the box.

See also

getMin().

SbVec2d & SbBox2d::getMax ( void  )

inline

Returns the upper right corner of the box.

See also

getMin().

void SbBox2d::extendBy

(

const SbVec2d &

point

)

Extend the boundaries of the box by the given point, i.e. make the box fit around the point if it isn't already situated within it.

void SbBox2d::extendBy

(

const SbBox2d &

box

)

Extend the boundaries of the box by the given box parameter. This is equal to calling the above method twice with the corner points.

void SbBox2d::makeEmpty

(

void

)

Marks this as an empty box.

See also

isEmpty().

SbBool SbBox2d::isEmpty ( void  ) const

inline

Check if this has been marked as an empty box.

See also

makeEmpty().

SbBool SbBox2d::hasArea ( void  ) const

inline

Check if the box has "positive" area, i.e. the lower left corner is actually lower and more to the left than the other corner point.

SbBool SbBox2d::intersect

(

const SbVec2d &

point

)

const

Check if point lies within the boundaries of this box.

SbBool SbBox2d::intersect

(

const SbBox2d &

box

)

const

Check if box lies wholly or partly within the boundaries of this box.

SbVec2d SbBox2d::getClosestPoint

(

const SbVec2d &

p

)

const

Return the point on the box closest to the given point p.

SbBool SbBox2d::findIntersection	(	const SbVec2d &	a,
		const SbVec2d &	b,
		SbVec2d &	ia,
		SbVec2d &	ib
	)		const

Check if a a line from a to b intersects the box, and return the coordinates of the union line in ia and ib.

This function is a Coin extension.

SbVec2d SbBox2d::getCenter ( void  ) const

inline

Returns the center point of the box.

void SbBox2d::getOrigin ( double &  originX, double &  originY  ) const

inline

Returns the coordinates of the box origin (i.e. the lower left corner).

See also

getMin().

void SbBox2d::getSize ( double &  sizeX, double &  sizeY  ) const

inline

Returns width and height of box.

double SbBox2d::getAspectRatio ( void  ) const

inline

Returns aspect ratio of box, which is defined as box width divided on box height.

Friends And Related Function Documentation

int operator== ( const SbBox2d &  b1, const SbBox2d &  b2  )

related

Check b1 and b2 for equality.

int operator!= ( const SbBox2d &  b1, const SbBox2d &  b2  )

related

Check b1 and b2 for inequality.

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

• SbBox2d.h
• SbBox2d.cpp