GrayLib::cRegion Class Reference

#include <cRegion.h>

Inheritance diagram for GrayLib::cRegion:

Public Member Functions
	cRegion (const cRectI &rect)
	cRegion ()
virtual	~cRegion ()
virtual bool	isValidCheck () const noexcept
	< memory allocation and structure definitions are valid. More...
bool	isRegionEmpty () const
void	EmptyRegion ()
void	AddRegion (const cRegion *pRegionTest)
bool	SubtractRegion (const cRegion *pRegionTest)
void	SetRegionSubtract (const cRectI &rect1, const cRectI &rect2)
const cRectI &	get_RectUnion () const
void	put_RectUnion (const cRectI &rect)
ITERATE_t	get_RegionRectCount () const
const cRectI &	GetRegionRect (ITERATE_t i) const
cRectI &	RefRegionRect (ITERATE_t i)
virtual bool	AddRegionRect (const cRectI &rect)
virtual void	RemoveRegionRect (ITERATE_t i)
bool	SubtractRegionRect (const cRectI &rect)
void	OptimizeRegionRects ()
cPoint2i	GetRegionCorner (DIR_TYPE eDir=DIR_QTY) const
bool	PtInRegion (int x, int y) const
bool	PtInRegion (const cPoint2i &pt) const
bool	IsOverlapped (const cRectI &rect) const
bool	IsInsideMe (const cRectI &rect) const
bool	IsInsideMe (const cRegion *pRegionIsSmaller) const
bool	IsOverlapped (const cRegion *pRegionTest) const
bool	IsEqualRegion (const cRegion *pRegionTest) const
HRESULT	v_SetRegion (const cVariant &vVal)
void	v_GetRegion (cVariant &vVal) const
	UNITTEST_FRIEND (cRegion)
Public Member Functions inherited from Gray::CObject
virtual	~CObject ()
virtual void	AssertValid () const
	< memory allocation and structure definitions are valid. More...
virtual void	Serialize (cArchive &a)

Protected Attributes
cRectI	m_rectUnion
	The union rectangle. (may have holes in it of course) More...

Detailed Description

A 2d (integer) region made of rectangles. loosely based on http://www.codeproject.com/KB/GDI/Regions.aspx

Constructor & Destructor Documentation

cRegion() [1/2]

GrayLib::cRegion::cRegion

(

const cRectI &

rect

)

cRegion() [2/2]

GrayLib::cRegion::cRegion

(

)

~cRegion()

GrayLib::cRegion::~cRegion ( )

virtual

Member Function Documentation

AddRegion()

void GrayLib::cRegion::AddRegion

(

const cRegion *

pRegionTest

)

AddRegionRect()

bool GrayLib::cRegion::AddRegionRect ( const cRectI &  rect )

virtual

Note

we really should normalize this rect with any existing rects !

EmptyRegion()

void GrayLib::cRegion::EmptyRegion ( )

inline

get_RectUnion()

const cRectI& GrayLib::cRegion::get_RectUnion ( ) const

inline

get_RegionRectCount()

ITERATE_t GrayLib::cRegion::get_RegionRectCount

(

)

const

How many rectangles in this region ?

GetRegionCorner()

cPoint2i GrayLib::cRegion::GetRegionCorner

(

DIR_TYPE

eDir = DIR_QTY

)

const

Note

DIR_QTY = center.

GetRegionRect()

const cRectI & GrayLib::cRegion::GetRegionRect

(

ITERATE_t

i

)

const

Get a particular rectangle.

IsEqualRegion()

bool GrayLib::cRegion::IsEqualRegion

(

const cRegion *

pRegionTest

)

const

Find dupe rectangles.

IsInsideMe() [1/2]

bool GrayLib::cRegion::IsInsideMe

(

const cRectI &

rect

)

const

Is rect fully inside this region?

IsInsideMe() [2/2]

bool GrayLib::cRegion::IsInsideMe

(

const cRegion *

pRegionIsSmaller

)

const

Is the pRegionTest completely inside this region ?

IsOverlapped() [1/2]

bool GrayLib::cRegion::IsOverlapped

(

const cRectI &

rect

)

const

Does the region overlap this rectangle.

IsOverlapped() [2/2]

bool GrayLib::cRegion::IsOverlapped

(

const cRegion *

pRegionTest

)

const

Does the region overlap this other region.

isRegionEmpty()

bool GrayLib::cRegion::isRegionEmpty ( ) const

inline

isValidCheck()

virtual bool GrayLib::cRegion::isValidCheck ( ) const

inlinevirtualnoexcept

< memory allocation and structure definitions are valid.

NOT in MFC so use COBJECT_IsValidCheck to call.

Note

This can't be called in constructors and destructors of course !

Reimplemented from Gray::CObject.

OptimizeRegionRects()

void GrayLib::cRegion::OptimizeRegionRects

(

)

Get rid of overlapping rects. Combine adjacent rects that may be combined. m_rectUnion should not change !

PtInRegion() [1/2]

bool GrayLib::cRegion::PtInRegion ( const cPoint2i &  pt ) const

inline

PtInRegion() [2/2]

bool GrayLib::cRegion::PtInRegion	(	int	x,
		int	y
	)		const

is this point in the region?

put_RectUnion()

void GrayLib::cRegion::put_RectUnion ( const cRectI &  rect )

inline

RefRegionRect()

cRectI & GrayLib::cRegion::RefRegionRect

(

ITERATE_t

i

)

Get a particular rectangle. allow it to be modified!

RemoveRegionRect()

void GrayLib::cRegion::RemoveRegionRect ( ITERATE_t  i )

virtual

Get rid of a rectangle.

SetRegionSubtract()

void GrayLib::cRegion::SetRegionSubtract	(	const cRectI &	rect1,
		const cRectI &	rect2
	)

Create a region by subtracting rect2 from rect1

SubtractRegion()

bool GrayLib::cRegion::SubtractRegion

(

const cRegion *

pRegionTest

)

Returns

true = was overlapped.

SubtractRegionRect()

bool GrayLib::cRegion::SubtractRegionRect

(

const cRectI &

rect

)

Subtract rect from this region.

Returns

true = overlap.

UNITTEST_FRIEND()

GrayLib::cRegion::UNITTEST_FRIEND

(

cRegion

)

v_GetRegion()

void GrayLib::cRegion::v_GetRegion

(

cVariant &

vVal

)

const

Get this as a Variant.

v_SetRegion()

HRESULT GrayLib::cRegion::v_SetRegion

(

const cVariant &

vVal

)

set this from a Variant.

Member Data Documentation

m_rectUnion

cRectI GrayLib::cRegion::m_rectUnion

protected

The union rectangle. (may have holes in it of course)

---

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

• c:/Dennis/Source/Gray/GrayLib/include/Geometry/cRegion.h
• c:/Dennis/Source/Gray/GrayLib/src/Geometry/cRegion.cpp