The a2dBoundingBox class stores one a2dBoundingBox of a a2dCanvasObject. More...

#include <bbox.h>

Public Member Functions
	a2dBoundingBox ()
	constructor

	a2dBoundingBox (const a2dBoundingBox &box)
	boundingbox constructor given another boundingbox

	a2dBoundingBox (const a2dPoint2D &point)
	boundingbox constructor given a point

	a2dBoundingBox (double x1, double y1, double x2, double y2)
	boundingbox constructor given two sets of coordinates

a2dBoundingBox &	operator+ (a2dBoundingBox &)
	And operation on two boxes.

const a2dBoundingBox &	operator+= (const a2dBoundingBox &box)
	OR box to this.

a2dBoundingBox &	operator= (const a2dBoundingBox &)
	set this boundingbox to another boundingbox

bool	And (a2dBoundingBox *, double Marge=0)
	intersect the boundingbox with another, return true if the result is non zero

void	Enlarge (const double Marge)
	enlarge with the given amount

void	EnlargeXY (const double MargeX, const double MargeY)
	enlarge with the given amount

void	Shrink (const double Marge)
	shrink with the given amount

void	Expand (const a2dPoint2D &, const a2dPoint2D &)
	expand boundingbox width two points

void	Expand (const a2dPoint2D &)
	expand boundingbox width one points

void	Expand (double x, double y)
	expand boundingbox width one coordinate

void	Expand (const a2dBoundingBox &bbox)
	expand boundingbox width another boundingbox

OVERLAP	Intersect (const a2dBoundingBox &, double Marge=0) const

bool	LineIntersect (const a2dPoint2D &begin, const a2dPoint2D &end) const

bool	PointInBox (const a2dPoint2D &, double Marge=0) const
	is the point within the boundingbox

bool	PointInBox (double x, double y, double Marge=0) const
	is the coordinate within the boundingbox

bool	PointOnBox (double x, double y, double Marge) const
	is the coordinate on the border of the boundingbox

void	Reset ()
	set invalid

const a2dBoundingBox &	Translate (a2dPoint2D &)
	translate with given vector

const a2dBoundingBox &	Translate (double x, double y)
	translate with given vector

void	MapBbox (const a2dAffineMatrix &matrix)

double	GetWidth () const
	returns width of the boundingbox

double	GetHeight () const
	returns height of the boundingbox

bool	GetValid () const
	returns true if boundingbox is calculated properly and therefore its valid flag is set.

void	SetValid (bool)

void	SetBoundingBox (const a2dPoint2D &a_point)
	set the bounding box to be this point

void	SetMin (double px, double py)
	set the bounding box its maximum

void	SetMax (double px, double py)
	set the bounding box its minimum

a2dPoint2D	GetMin () const
	get the bounding box its minimum

a2dPoint2D	GetMax () const
	get the bounding box its maximum

double	GetMinX () const
	get minimum X of the boundingbox

double	GetMinY () const
	get minimum Y of the boundingbox

double	GetMaxX () const
	get maximum X of the boundingbox

double	GetMaxY () const
	get maximum Y of the boundingbox

double	GetSize ()

a2dPoint2D	GetCentre () const
	get centre

void	SetMinX (double minx)
	set the bounding box its minimum X, does not validate the box

void	SetMinY (double miny)
	set the bounding box its minimum Y, does not validate the box

void	SetMaxX (double maxx)
	set the bounding box its maximum X, does not validate the box

void	SetMaxY (double maxy)
	set the bounding box its maximum Y, does not validate the box

Protected Attributes
double	m_minx
	mininum X of bounding box in world coordinates

double	m_miny
	mininum Y of bounding box in world coordinates

double	m_maxx
	maximum X of bounding box in world coordinates

double	m_maxy
	maximum Y of bounding box in world coordinates

bool	m_validbbox
	true if boundingbox is valid

Detailed Description

The a2dBoundingBox class stores one a2dBoundingBox of a a2dCanvasObject.

The a2dBoundingBox is defined by two coordiates, a upperleft coordinate and a lowerright coordinate. It has a valid flag to tell if the boundingbox contains valid information or not.

Definition at line 39 of file bbox.h.

Member Function Documentation

OVERLAP a2dBoundingBox::Intersect	(	const a2dBoundingBox &	other,
		double	Marge = `0`
	)		const

check intersection

Returns: OVERLAP: _IN,_ON,_OUT

Definition at line 205 of file bbox.cpp.

bool a2dBoundingBox::LineIntersect	(	const a2dPoint2D &	begin,
		const a2dPoint2D &	end
	)		const

intersection with a line

Returns: true if interseting

Definition at line 230 of file bbox.cpp.

void a2dBoundingBox::MapBbox ( const a2dAffineMatrix & matrix )

map the boundingbox using the matrix. The boundingbox is first transformed, and at the new position and angle etc. recalculated.

Definition at line 445 of file bbox.cpp.

void a2dBoundingBox::SetValid ( bool value )

See Also: GetValid()

Definition at line 364 of file bbox.cpp.

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

Public Member Functions

Protected Attributes

Detailed Description

Member Function Documentation