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LSST Data Management Base Package
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lsst::afw::coord::Observatory Class Referencefinal

Hold the location of an observatory. More...

#include <Observatory.h>

Public Member Functions

 Observatory (lsst::geom::Angle const longitude, lsst::geom::Angle const latitude, double const elevation)
 Construct an Observatory with longitude and latitude specified as lsst::geom::Angle.
 
 Observatory (std::string const &longitude, std::string const &latitude, double const elevation)
 Construct an Observatory with longitude and latitude specified as sexagesimal strings.
 
 ~Observatory () noexcept
 
 Observatory (Observatory const &) noexcept
 
 Observatory (Observatory &&) noexcept
 
Observatoryoperator= (Observatory const &) noexcept
 
Observatoryoperator= (Observatory &&) noexcept
 
void setLongitude (lsst::geom::Angle const longitude)
 set telescope longitude
 
void setLatitude (lsst::geom::Angle const latitude)
 set telescope latitude (positive values are E of Greenwich)
 
void setElevation (double const elevation)
 set telescope elevation (meters above reference spheroid)
 
lsst::geom::Angle getLongitude () const noexcept
 get telescope longitude (positive values are E of Greenwich)
 
lsst::geom::Angle getLatitude () const noexcept
 get telescope latitude
 
double getElevation () const noexcept
 get telescope elevation (meters above reference spheroid)
 
std::string toString () const
 get string representation
 
bool operator== (Observatory const &rhs) const noexcept
 
bool operator!= (Observatory const &rhs) const noexcept
 
std::size_t hash_value () const noexcept
 Return a hash of this object.
 

Detailed Description

Hold the location of an observatory.

Definition at line 43 of file Observatory.h.

Constructor & Destructor Documentation

◆ Observatory() [1/4]

lsst::afw::coord::Observatory::Observatory ( lsst::geom::Angle const longitude,
lsst::geom::Angle const latitude,
double const elevation )

Construct an Observatory with longitude and latitude specified as lsst::geom::Angle.

Parameters
[in]longitudetelescope longitude (positive values are E of Greenwich)
[in]latitudetelescope latitude
[in]elevationtelescope elevation (meters above reference spheroid)

Definition at line 39 of file Observatory.cc.

41 : _latitude(latitude), _longitude(longitude), _elevation(elevation) {}

◆ Observatory() [2/4]

lsst::afw::coord::Observatory::Observatory ( std::string const & longitude,
std::string const & latitude,
double const elevation )

Construct an Observatory with longitude and latitude specified as sexagesimal strings.

Parameters
[in]longitudetelescope longitude (dd:mm:ss.s, positive values are E of Greenwich)
[in]latitudetelescope latitude (dd:mm:ss.s)
[in]elevationtelescope elevation (meters above reference spheroid)

◆ ~Observatory()

lsst::afw::coord::Observatory::~Observatory ( )
defaultnoexcept

◆ Observatory() [3/4]

lsst::afw::coord::Observatory::Observatory ( Observatory const & )
defaultnoexcept

◆ Observatory() [4/4]

lsst::afw::coord::Observatory::Observatory ( Observatory && )
defaultnoexcept

Member Function Documentation

◆ getElevation()

double lsst::afw::coord::Observatory::getElevation ( ) const
inlinenoexcept

get telescope elevation (meters above reference spheroid)

Definition at line 82 of file Observatory.h.

82{ return _elevation; }

◆ getLatitude()

lsst::geom::Angle lsst::afw::coord::Observatory::getLatitude ( ) const
noexcept

get telescope latitude

Definition at line 52 of file Observatory.cc.

52{ return _latitude; }

◆ getLongitude()

lsst::geom::Angle lsst::afw::coord::Observatory::getLongitude ( ) const
noexcept

get telescope longitude (positive values are E of Greenwich)

Definition at line 50 of file Observatory.cc.

50{ return _longitude; }

◆ hash_value()

std::size_t lsst::afw::coord::Observatory::hash_value ( ) const
inlinenoexcept

Return a hash of this object.

Definition at line 103 of file Observatory.h.

103 {
104 // Completely arbitrary seed
105 return cpputils::hashCombine(17, _latitude.wrapCtr(), _longitude.wrapCtr(), _elevation);
106 }
std::size_t hashCombine(std::size_t seed) noexcept
Combine hashes.
Definition hashCombine.h:35

◆ operator!=()

bool lsst::afw::coord::Observatory::operator!= ( Observatory const & rhs) const
inlinenoexcept

Definition at line 100 of file Observatory.h.

100{ return !(*this == rhs); }

◆ operator=() [1/2]

Observatory & lsst::afw::coord::Observatory::operator= ( Observatory && )
defaultnoexcept

◆ operator=() [2/2]

Observatory & lsst::afw::coord::Observatory::operator= ( Observatory const & )
defaultnoexcept

◆ operator==()

bool lsst::afw::coord::Observatory::operator== ( Observatory const & rhs) const
inlinenoexcept

Definition at line 87 of file Observatory.h.

87 {
88 // Observatory may be initialized to NaN values as a placeholder, or to indicate "unknown".
89 auto deltaLongitude = std::isnan(_latitude.asRadians()) && std::isnan(rhs._latitude.asRadians())
91 : (_latitude - rhs._latitude).wrapCtr();
92 auto deltaLatitude = std::isnan(_longitude.asRadians()) && std::isnan(rhs._longitude.asRadians())
94 : (_longitude - rhs._longitude).wrapCtr();
95 return (deltaLongitude == 0.0 * lsst::geom::degrees) &&
96 (deltaLatitude == 0.0 * lsst::geom::degrees) &&
97 ((std::isnan(_elevation) && std::isnan(rhs._elevation)) ||
98 (_elevation - rhs._elevation) == 0.0);
99 }
T isnan(T... args)
AngleUnit constexpr degrees
constant with units of degrees
Definition Angle.h:110

◆ setElevation()

void lsst::afw::coord::Observatory::setElevation ( double const elevation)

set telescope elevation (meters above reference spheroid)

Definition at line 58 of file Observatory.cc.

58{ _elevation = elevation; }

◆ setLatitude()

void lsst::afw::coord::Observatory::setLatitude ( lsst::geom::Angle const latitude)

set telescope latitude (positive values are E of Greenwich)

Definition at line 54 of file Observatory.cc.

54{ _latitude = latitude; }

◆ setLongitude()

void lsst::afw::coord::Observatory::setLongitude ( lsst::geom::Angle const longitude)

set telescope longitude

Definition at line 56 of file Observatory.cc.

56{ _longitude = longitude; }

◆ toString()

std::string lsst::afw::coord::Observatory::toString ( ) const

get string representation

Definition at line 60 of file Observatory.cc.

60 {
61 // Follow ISO 6709 ordering and sign convention.
62 return (boost::format("%gN, %gE %g") % getLatitude().asDegrees() % getLongitude().asDegrees() %
64 .str();
65}
double getElevation() const noexcept
get telescope elevation (meters above reference spheroid)
Definition Observatory.h:82
lsst::geom::Angle getLatitude() const noexcept
get telescope latitude
lsst::geom::Angle getLongitude() const noexcept
get telescope longitude (positive values are E of Greenwich)

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