Sky map pixel class. More...

#include <GSkyPixel.hpp>

Inheritance diagram for GSkyPixel:

Public Member Functions
	GSkyPixel (void)
	Void constructor. More...

	GSkyPixel (const int &index)
	1D pixel constructor (integer version) More...

	GSkyPixel (const double &index)
	1D pixel constructor (double precision version) More...

	GSkyPixel (const int &x, const int &y)
	2D pixel constructor (integer version) More...

	GSkyPixel (const double &x, const double &y)
	2D pixel constructor (double precision version) More...

	GSkyPixel (const GSkyPixel &pixel)
	Copy constructor. More...

virtual	~GSkyPixel (void)
	Destructor. More...

GSkyPixel &	operator= (const GSkyPixel &pixel)
	Assignment operator. More...

	operator int () const
	To integer type conversion. More...

	operator double () const
	To double type conversion. More...

void	clear (void)
	Clear instance. More...

GSkyPixel *	clone (void) const
	Clone sky map pixel. More...

std::string	classname (void) const
	Return class name. More...

int	size (void) const
	Return pixel dimension. More...

bool	is_1D (void) const
	Check if pixel is 1D. More...

bool	is_2D (void) const
	Check if pixel is 2D. More...

void	index (const double &index)
	Set sky map pixel index. More...

void	x (const double &x)
	Set x value of sky map pixel. More...

void	y (const double &y)
	Set y value of sky map pixel. More...

void	xy (const double &x, const double &y)
	Set x and y value of sky map pixel. More...

const double &	index (void) const
	Return sky map pixel index. More...

const double &	x (void) const
	Return x value of sky map pixel. More...

const double &	y (void) const
	Return y value of sky pixel. More...

std::string	print (const GChatter &chatter=NORMAL) const
	Print pixel. More...

Public Member Functions inherited from GBase
virtual	~GBase (void)
	Destructor. More...

Private Member Functions
void	init_members (void)
	Initialise class members. More...

void	copy_members (const GSkyPixel &pixel)
	Copy class members. More...

void	free_members (void)
	Delete class members. More...

Private Attributes
int	m_size
	Pixel dimension (0=undefined, 1=1D, 2=2D) More...

double	m_x
	X index. More...

double	m_y
	Y index. More...

Friends
bool	operator== (const GSkyPixel &a, const GSkyPixel &b)
	Equality operator. More...

bool	operator!= (const GSkyPixel &a, const GSkyPixel &b)
	Inqquality operator. More...

Detailed Description

Sky map pixel class.

This class implements a sky map pixel. A sky map pixel may be either 1-dimensional (1D) or 2-dimensional (2D). 1D pixels are set and retrieved using the index() method. The X and Y components of 2D pixels are set and retrieved using the x() and y() methods. The xy() method allows setting of both the X and Y components simultaneously.

There are integer and double precision variants for 1D and 2D pixel constructors:

GSkyPixel int_1D_pixel(1); // Set index to 1 GSkyPixel double_1D_pixel(1.0); // Set index to 1.0 GSkyPixel int_2D_pixel(1,2); // Set (x,y)=(1,2) GSkyPixel double_2D_pixel(1.0,2.0); // Set (x,y)=(1.0,2.0)

The 1D constructors allow for automatic type conversion:

GSkyPixel int_1D_pixel = 1; // Set index to 1 GSkyPixel double_1D_pixel = 1.0; // Set index to 1.0

Note that the class also provides conversion operators to int and double allowing to write:

int index = GSkyPixel(1); // Retrieve integer index double dindex = GSkyPixel(1.0); // Retrieve double precision index

The dimensionality of a pixel is checked using the is_1D() and is_2D() methods. The size() method returns 1 for 1D pixels and 2 for 2D pixels. If a pixel is not initialised, e.g.

GSkyPixel pixel; // Not initialised

the is_1D() and is_2D() methods return false and the size() method returns 0.

Definition at line 74 of file GSkyPixel.hpp.

Constructor & Destructor Documentation

GSkyPixel::GSkyPixel ( void )

Void constructor.

Definition at line 57 of file GSkyPixel.cpp.

References init_members().

Referenced by clone().

GSkyPixel::GSkyPixel ( const int & index )

1D pixel constructor (integer version)

Parameters

[in] index Pixel index.

Definition at line 72 of file GSkyPixel.cpp.

References m_size, m_x, and m_y.

GSkyPixel::GSkyPixel ( const double & index )

1D pixel constructor (double precision version)

Parameters

[in] index Pixel index.

Definition at line 89 of file GSkyPixel.cpp.

References index(), m_size, m_x, and m_y.

GSkyPixel::GSkyPixel	(	const int &	x,
		const int &	y
	)

2D pixel constructor (integer version)

Parameters

[in]	x	Pixel X index.
[in]	y	Pixel Y index.

Definition at line 107 of file GSkyPixel.cpp.

References m_size, m_x, and m_y.

GSkyPixel::GSkyPixel	(	const double &	x,
		const double &	y
	)

2D pixel constructor (double precision version)

Parameters

[in]	x	Pixel X index.
[in]	y	Pixel Y index.

Definition at line 125 of file GSkyPixel.cpp.

References m_size, m_x, m_y, x(), and y().

GSkyPixel::GSkyPixel ( const GSkyPixel & pixel )

Copy constructor.

Parameters

[in] pixel Sky pixel.

Definition at line 142 of file GSkyPixel.cpp.

References copy_members(), and init_members().

GSkyPixel::~GSkyPixel ( void )

virtual

Destructor.

Definition at line 158 of file GSkyPixel.cpp.

References free_members().

Member Function Documentation

std::string GSkyPixel::classname ( void ) const

inlinevirtual

Return class name.

Returns: String containing the class name ("GSkyPixel").

Implements GBase.

Definition at line 130 of file GSkyPixel.hpp.

void GSkyPixel::clear ( void )

virtual

Clear instance.

Set sky map pixel to a clean initial state.

Implements GBase.

Definition at line 259 of file GSkyPixel.cpp.

References free_members(), and init_members().

Referenced by GWcs::init_members().

GSkyPixel * GSkyPixel::clone ( void ) const

virtual

Clone sky map pixel.

Returns: Pointer to deep copy of sky map pixel.

Returns a pointer to a deep copy of a sky map pixel.

Implements GBase.

Definition at line 279 of file GSkyPixel.cpp.

References GSkyPixel().

void GSkyPixel::copy_members ( const GSkyPixel & pixel )

private

Copy class members.

Parameters

[in] pixel Sky pixel.

Definition at line 345 of file GSkyPixel.cpp.

References m_size, m_x, and m_y.

Referenced by GSkyPixel(), and operator=().

void GSkyPixel::free_members ( void )

private

Delete class members.

Definition at line 360 of file GSkyPixel.cpp.

Referenced by clear(), operator=(), and ~GSkyPixel().

void GSkyPixel::index ( const double & index )

inline

Set sky map pixel index.

Parameters

[in] index Pixel index.

Sets the 1D pixel index.

Definition at line 183 of file GSkyPixel.hpp.

References index(), m_size, m_x, and m_y.

Referenced by GSkyMap::contains(), and GSkyMap::inx2pix().

const double & GSkyPixel::index ( void ) const

inline

Return sky map pixel index.

Returns: Sky map pixel index

Returns the 1D index of a sky map pixel. The method does not check whether the pixel is indeed a 1D pixel.

Definition at line 256 of file GSkyPixel.hpp.

References m_x.

Referenced by GSkyPixel(), and index().

void GSkyPixel::init_members ( void )

private

Initialise class members.

Definition at line 328 of file GSkyPixel.cpp.

References m_size, m_x, and m_y.

Referenced by clear(), GSkyPixel(), and operator=().

bool GSkyPixel::is_1D ( void ) const

inline

Check if pixel is 1D.

Returns: True if pixel is 1D.

Definition at line 157 of file GSkyPixel.hpp.

References m_size.

Referenced by GHealpix::boundaries(), GSkyMap::contains(), GHealpix::neighbours(), GHealpix::pix2dir(), GSkyMap::pix2inx(), and print().

bool GSkyPixel::is_2D ( void ) const

inline

Check if pixel is 2D.

Returns: True if pixel is 2D.

Definition at line 169 of file GSkyPixel.hpp.

References m_size.

Referenced by GSkyMap::contains(), GSkyMap::pix2inx(), and print().

GSkyPixel::operator double ( ) const

To double type conversion.

Returns: Pixel index.

Converts the sky map pixel into a double precision value.

Definition at line 233 of file GSkyPixel.cpp.

References G_DOUBLE.

GSkyPixel::operator int ( ) const

To integer type conversion.

Returns: Pixel index.

Converts the sky map pixel into an integer value.

Definition at line 208 of file GSkyPixel.cpp.

References G_INT.

GSkyPixel & GSkyPixel::operator= ( const GSkyPixel & pixel )

Assignment operator.

Parameters

[in] pixel Sky map pixel.

Returns: Sky map pixel.

Definition at line 180 of file GSkyPixel.cpp.

References copy_members(), free_members(), and init_members().

std::string GSkyPixel::print ( const GChatter & chatter = NORMAL ) const

virtual

Print pixel.

Parameters

[in] chatter Chattiness (defaults to NORMAL).

Returns: String containing pixel information.

Implements GBase.

Definition at line 292 of file GSkyPixel.cpp.

References is_1D(), is_2D(), SILENT, gammalib::str(), x(), and y().

Referenced by GHealpix::boundaries(), GHealpix::neighbours(), GHealpix::pix2dir(), GSkyMap::pix2dir(), and GSkyMap::solidangle().

int GSkyPixel::size ( void ) const

inline

Return pixel dimension.

Returns: Pixel dimension [0,1,2].

Returns the pixel dimension. If the pixel is not defined the method returns 0.

Definition at line 145 of file GSkyPixel.hpp.

References m_size.

Referenced by GSkyMap::pix2dir(), and GSkyMap::solidangle().

void GSkyPixel::x ( const double & x )

inline

Set x value of sky map pixel.

Parameters

[in] x X pixel index.

Sets the X value of a 2D pixel index. The method does not alter the Y pixel index.

Definition at line 204 of file GSkyPixel.hpp.

References m_size, m_x, and x().

Referenced by GSkyRegionRectangle::contains(), GSkyMap::contains(), GSkyMap::extract(), GSkyMap::flux(), GSkyMap::inx2pix(), GSkyRegionRectangle::local_to_dir(), GSkyMap::operator()(), GSkyRegionRectangle::overlaps(), GSkyMap::overlaps_circle(), GWcs::pix2dir(), GSkyMap::pix2inx(), GSkyMap::region_circle(), and GWcs::solidangle().

const double & GSkyPixel::x ( void ) const

inline

Return x value of sky map pixel.

Returns: X value of sky map pixel

Returns the X value of a 2D sky map pixel. The method does not check whether the pixel is indeed a 2D pixel.

Definition at line 271 of file GSkyPixel.hpp.

References m_x.

Referenced by GSkyPixel(), print(), x(), and xy().

void GSkyPixel::xy	(	const double &	x,
		const double &	y
	)

inline

Set x and y value of sky map pixel.

Parameters

[in]	x	X pixel index.
[in]	y	Y pixel index.

Sets the X and Y value of a 2D pixel index.

Definition at line 238 of file GSkyPixel.hpp.

References m_size, m_x, m_y, x(), and y().

Referenced by GWcs::dir2pix().

void GSkyPixel::y ( const double & y )

inline

Set y value of sky map pixel.

Parameters

[in] y Y pixel index.

Sets the Y value of a 2D pixel index. The method does not alter the X pixel index.

Definition at line 221 of file GSkyPixel.hpp.

References m_size, m_y, and y().

Referenced by GSkyRegionRectangle::contains(), GSkyMap::contains(), GSkyMap::extract(), GSkyMap::flux(), GSkyMap::inx2pix(), GSkyRegionRectangle::local_to_dir(), GSkyMap::operator()(), GSkyRegionRectangle::overlaps(), GSkyMap::overlaps_circle(), GWcs::pix2dir(), GSkyMap::pix2inx(), GSkyMap::region_circle(), and GWcs::solidangle().

const double & GSkyPixel::y ( void ) const

inline

Return y value of sky pixel.

Returns: Y value of sky map pixel

Returns the Y value of a 2D sky map pixel. The method does not check whether the pixel is indeed a 2D pixel.

Definition at line 286 of file GSkyPixel.hpp.

References m_y.

Referenced by GSkyPixel(), print(), xy(), and y().

Friends And Related Function Documentation

bool operator!=	(	const GSkyPixel &	a,
		const GSkyPixel &	b
	)

friend

Inqquality operator.

Parameters

[in]	a	First sky pixel.
[in]	b	Second sky pixel.

Returns: True if first and second sky pixels are different.

Definition at line 314 of file GSkyPixel.hpp.

bool operator==	(	const GSkyPixel &	a,
		const GSkyPixel &	b
	)

friend

Equality operator.

Parameters

[in]	a	First sky pixel.
[in]	b	Second sky pixel.

Returns: True if first and second sky pixels are identical.

Definition at line 300 of file GSkyPixel.hpp.

Member Data Documentation

int GSkyPixel::m_size

private

Pixel dimension (0=undefined, 1=1D, 2=2D)

Definition at line 118 of file GSkyPixel.hpp.

Referenced by copy_members(), GSkyPixel(), index(), init_members(), is_1D(), is_2D(), operator!=(), operator==(), size(), x(), xy(), and y().

double GSkyPixel::m_x

private

X index.

Definition at line 119 of file GSkyPixel.hpp.

Referenced by copy_members(), GSkyPixel(), index(), init_members(), operator!=(), operator==(), x(), and xy().

double GSkyPixel::m_y

private

Y index.

Definition at line 120 of file GSkyPixel.hpp.

Referenced by copy_members(), GSkyPixel(), index(), init_members(), operator!=(), operator==(), xy(), and y().

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

include/GSkyPixel.hpp
src/sky/GSkyPixel.cpp

Public Member Functions

Private Member Functions

Private Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation