Class to hold a region as a LEL node. More...

#include <LELRegion.h>

Inheritance diagram for casacore::LELRegion:

Public Member Functions
	LELRegion (const LattRegionHolder &region)
	Constructor. More...

	LELRegion (LattRegionHolder *region)
	Constructor. More...

	~LELRegion ()
	Destructor. More...

const LattRegionHolder &	region () const
	Get a pointer to the region object. More...

virtual void	eval (LELArray< Bool > &, const Slicer &) const
	Getting region data cannot be done (throws an exception). More...

virtual LELScalar< Bool >	getScalar () const
	Getting region data cannot be done (throws an exception). More...

virtual Bool	prepareScalarExpr ()
	Do further preparations (e.g. More...

virtual String	className () const
	Get class name. More...

Public Member Functions inherited from casacore::LELInterface< Bool >
virtual	~LELInterface ()
	Virtual destructor. More...

virtual void	evalRef (LELArrayRef< Bool > &result, const Slicer &section) const

LELArray< Bool >	getArray () const
	Get the result of an array subexpression. More...

Bool	isScalar () const
	Is the result of evaluating this expression a scalar ? More...

const IPosition &	shape () const
	Get the shape of the expression result. More...

const LELAttribute &	getAttribute () const
	Get expression attribute. More...

virtual Bool	lock (FileLocker::LockType, uInt nattempts)
	Handle locking/syncing of the parts of a lattice expression. More...

virtual void	unlock ()

virtual Bool	hasLock (FileLocker::LockType) const

virtual void	resync ()

Static Public Member Functions
static LELRegion *	makeUnion (const LELInterface< Bool > &left, const LELInterface< Bool > &right)
	Form a compound from the regions. More...

static LELRegion *	makeIntersection (const LELInterface< Bool > &left, const LELInterface< Bool > &right)

static LELRegion *	makeDifference (const LELInterface< Bool > &left, const LELInterface< Bool > &right)

static LELRegion *	makeComplement (const LELInterface< Bool > &expr)

Static Public Member Functions inherited from casacore::LELInterface< Bool >
static Bool	replaceScalarExpr (CountedPtr< LELInterface< Bool > > &expr)
	If the given expression is a valid scalar, replace it by its result. More...

Static Private Member Functions
static const LattRegionHolder &	region (const LELInterface< Bool > &expr)
	Get the LattRegionHolder after checking that the expression is a region. More...

static void	checkTypes (const LattRegionHolder &left, const LattRegionHolder &right)
	Check if both regions have the same type (pixel or world) and if no LCSlicer type of region is used. More...

Private Attributes
LattRegionHolder *	region_p
	Member variables. More...

Additional Inherited Members
Protected Member Functions inherited from casacore::LELInterface< Bool >
void	setAttr (const LELAttribute &attrib)
	Set the expression attributes of this object. More...

Detailed Description

Class to hold a region as a LEL node.

Intended use:

Internal

Review Status

Date Reviewed:: yyyy/mm/dd

Prerequisite

Etymology

This derived LEL letter class handles regions.

Synopsis

This LEL letter class is derived from LELInterface. It is used to construct LEL objects from regions. The internal region is an ImageRegion object, thus the region can be of any type. With operator [] a region is applied to an image (expression). At that stage possible world coordinates are converted to lattice coordinates.

The attributes of a LELRegion object define an empty shape, because in general the shape of a region is only known after it is applied to an image.

A description of the implementation details of the LEL classes can be found in Note 216

Motivation

We needed to be able to handle regions in a LEL expression.

Definition at line 89 of file LELRegion.h.

Constructor & Destructor Documentation

casacore::LELRegion::LELRegion ( const LattRegionHolder & region )

Constructor.

casacore::LELRegion::LELRegion ( LattRegionHolder * region )

Constructor.

It takes over the pointer.

casacore::LELRegion::~LELRegion ( )

Destructor.

Member Function Documentation

static void casacore::LELRegion::checkTypes	(	const LattRegionHolder &	left,
		const LattRegionHolder &	right
	)

staticprivate

Check if both regions have the same type (pixel or world) and if no LCSlicer type of region is used.

virtual String casacore::LELRegion::className ( ) const

virtual

Get class name.

Implements casacore::LELInterface< Bool >.

virtual void casacore::LELRegion::eval	(	LELArray< Bool > &	,
		const Slicer &
	)		const

virtual

Getting region data cannot be done (throws an exception).

Implements casacore::LELInterface< Bool >.

virtual LELScalar<Bool> casacore::LELRegion::getScalar ( ) const

virtual

Getting region data cannot be done (throws an exception).

Implements casacore::LELInterface< Bool >.

static LELRegion* casacore::LELRegion::makeComplement ( const LELInterface< Bool > & expr )

static

static LELRegion* casacore::LELRegion::makeDifference	(	const LELInterface< Bool > &	left,
		const LELInterface< Bool > &	right
	)

static

static LELRegion* casacore::LELRegion::makeIntersection	(	const LELInterface< Bool > &	left,
		const LELInterface< Bool > &	right
	)

static

static LELRegion* casacore::LELRegion::makeUnion	(	const LELInterface< Bool > &	left,
		const LELInterface< Bool > &	right
	)

static

Form a compound from the regions.

virtual Bool casacore::LELRegion::prepareScalarExpr ( )

virtual

Do further preparations (e.g.

optimization) on the expression.

Implements casacore::LELInterface< Bool >.

const LattRegionHolder& casacore::LELRegion::region ( ) const

inline

Get a pointer to the region object.

Definition at line 102 of file LELRegion.h.

References region_p.

static const LattRegionHolder& casacore::LELRegion::region ( const LELInterface< Bool > & expr )

staticprivate

Get the LattRegionHolder after checking that the expression is a region.

Member Data Documentation

LattRegionHolder* casacore::LELRegion::region_p

private

Member variables.

Definition at line 138 of file LELRegion.h.

Referenced by region().

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

casa/casacore/lattices/LEL/LELRegion.h

Public Member Functions

Static Public Member Functions

Static Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Intended use:

Review Status

Prerequisite

Etymology

Synopsis

Motivation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation