Directional Class Reference

Directional antennae. More...

#include <Directional.h>

Inheritance diagram for Directional:

Public Member Functions
	Directional ()
	Default constructor.
virtual double	get_vertical () const
	Get the counter-clockwise angle from north toward zenith in radians.
double	get_parallactic_angle () const
	Synonym for vertical angle.
Public Member Functions inherited from Mount
	Mount ()
	Default constructor.
virtual	~Mount ()
	Destructor.
void	set_source_coordinates (const sky_coord &coords)
	Set the coordinates of the source.
void	set_observatory_latitude (double latitude)
	Set the latitude of the observatory in radians.
double	get_observatory_latitude () const
void	set_observatory_longitude (double longitude)
	Set the longitude of the observatory in radians East of Greenwich.
double	get_observatory_longitude () const
void	set_epoch (const MJD &epoch)
	Set the epoch in Modified Julian Days.
MJD	get_epoch () const
void	set_hour_angle (double rad)
	Set the hour_angle in radians.
double	get_hour_angle () const
	Get the hour_angle in radians.
void	set_local_sidereal_time (double rad)
	Set the LST in radians.
double	get_local_sidereal_time () const
	Get the LST in radians.
virtual std::string	get_name () const =0
	Get the name of the mount.
virtual std::vector< std::pair< double, Mount * > >	slew_times (const sky_coord &coords)
	Return all possible slew times and resulting telescope states.
Public Member Functions inherited from Reference::Able
	Able ()
	Default constructor.
	Able (const Able &)
	Copy constructor.
Able &	operator= (const Able &)
	Assignment operator.
virtual	~Able ()
	Destructor.
unsigned	get_reference_count () const
	Returns the number of references there are to this.
Public Member Functions inherited from Reference::HeapTracked
	HeapTracked ()
	Default constructor.
	HeapTracked (const HeapTracked &)
	Copy constructor.
HeapTracked &	operator= (const HeapTracked &)
	Assignment operator.
virtual	~HeapTracked ()
	Destructor.
bool	__is_on_heap () const
	Return true if this instance is found in heap addresses.

Protected Member Functions
virtual Matrix< 3, 3, double >	get_basis (const Vector< 3, double > &from_source) const =0
	Get the receptor basis in the reference frame of the observatory.
void	build () const
	Lazily evaluate.
Protected Member Functions inherited from Mount
bool	get_built () const
	Return true when outputs reflect inputs.
Protected Member Functions inherited from Reference::Able
Handle *	__reference (bool active) const
	Add the address of a reference to this object.
void	__dereference (bool auto_delete=true) const
	Remove the address of a reference to this object.

Protected Attributes
double	vertical
	The parallactic angle in radians.
Protected Attributes inherited from Mount
double	declination
	The declination of the source in radians.
double	right_ascension
	The right ascension of the source in radians.
double	latitude
	The latitude of the observatory in radians.
double	longitude
	The latitude of the observatory in radians East of Greenwich.
MJD	epoch
	The epoch.
double	lst
	The LST in radians.
double	hour_angle
	The hour angle in radians.
Matrix< 3, 3, double >	source_basis
	Basis pointing to source in celestial reference frame.
Matrix< 3, 3, double >	observatory_basis
	Basis pointing to observatory in celestial reference frame.

Additional Inherited Members
Static Public Member Functions inherited from Reference::Able
static size_t	get_instance_count ()
	Returns the current number instances in existence.
Static Public Member Functions inherited from Reference::HeapTracked
static void *	operator new (size_t size, void *ptr=0)
	Records the addresses of new instances allocated on the heap.
static void	operator delete (void *location, void *ptr)
	Placement delete overload to match the placement new overload.
static void	operator delete (void *location)
	Regular delete overload.
static size_t	get_heap_queue_size ()
	Return the number of heap addresses awaiting processing.

Detailed Description

Directional antennae.

Member Function Documentation

build()

void Directional::build ( ) const

protectedvirtual

Lazily evaluate.

Reimplemented from Mount.

References Mount::build(), get_basis(), Mount::get_built(), Mount::observatory_basis, Mount::source_basis, and vertical.

Referenced by Horizon::get_azimuth(), Horizon::get_elevation(), get_vertical(), Meridian::get_x(), Meridian::get_y(), and Horizon::get_zenith().

get_basis()

virtual Matrix< 3, 3, double > Directional::get_basis ( const Vector< 3, double > & from_source ) const

protectedpure virtual

Get the receptor basis in the reference frame of the observatory.

Implemented in Horizon, and Meridian.

Referenced by build().

get_vertical()

double Directional::get_vertical ( ) const

virtual

Get the counter-clockwise angle from north toward zenith in radians.

Any point on the sky is crossed by two great circles: one that passes through celestial north and one that passes through zenith. (These great circles coincide when the source is on the meridian.) If vector N points in the direction of celestial north and vector Z points in the direction of zenith, then the vertical angle is measured counter-clockwise from N to Z.

The vertical angle is positive when the source is west of the meridian, and negative for sources in the east.

Implements Mount.

References build(), and vertical.

Referenced by get_parallactic_angle().

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

• Directional.h
• Directional.C