An observer whose momentary position and velocity is defined dynamically through a state provider function. More...

#include <supernovas.h>

Inheritance diagram for supernovas::DynamicObserver:

Public Member Functions
	DynamicObserver (novas_state_provider call, const void *arg=NULL)
	Instantiates a new observer with dynamically determined position / velocity via a designated state provider function.
Geometric	barycentric_at (const Time &time, enum novas_accuracy=NOVAS_FULL_ACCURACY) const
	Returns the Solar System Barycentric position and velocity vectors of this observer for the specified time and accuracy.
const std::string &	className () const override
	Returns the observer class name.
const Observer *	copy () const override
	Returns a newly allocated copy of this observer.
novas_state_provider	state_call () const
const void *	state_call_arg () const
std::string	to_string () const override
	Returns a string representation of this observer.
Public Member Functions inherited from supernovas::Observer
virtual	~Observer ()
const observer *	_novas_observer () const
	Returns the underlying NOVAS C observer data structure.
virtual bool	equals (const Observer &other) const
	Checks if this observer is essentially the same as the other, within the tolerances associated to their defining components.
Frame	frame_at (const Time &time, enum novas_accuracy accuracy=NOVAS_FULL_ACCURACY) const
	Returns an observing frame for this observer at the specified time and optionally with a specified accuracy.
virtual bool	is_geocentric () const
	Checks if this observer can be cast to a GeocentricObserver.
virtual bool	is_geodetic () const
	Checks if this observer can be cast to a GeodeticObserver.
bool	operator!= (const Observer &other) const
	Checks if two observers differ given standard tolerances associated to their defining components.
bool	operator== (const Observer &other) const
	Checks if two observers are essentially the same within the tolerances associated to their defining components.
Frame	reduced_accuracy_frame_at (const Time &time) const
	Returns a reduced accuracy observing frame for this observer at the specified time.
Interferometric	to_interferometric (const Apparent &phase_center, enum novas_reference_system system=NOVAS_ICRS) const
	Returns projected u,v,w coordinates for an interferometer station.
enum novas_observer_place	type () const
	Returns the observer type.
Public Member Functions inherited from supernovas::Validating
bool	is_valid () const
	Returns the previously set 'valid' state of the implementing instance.
	operator bool () const
	Objects that implement Validating can be used in conditionals directly, without explicitly calling is_valid().

Protected Member Functions
void	set_arg (const void *ptr)
	Sets the pointer argument to pass onto the state function call.
Protected Member Functions inherited from supernovas::Observer
	Observer (enum novas_observer_place type, const Site &site=Site::undefined(), const Position &pos=Position::origin(), const Velocity &vel=Velocity::stationary())
virtual Position	gcrs_position_at (const Time &time, enum novas_accuracy accuracy=NOVAS_FULL_ACCURACY) const
	Returns the geocentric geometric position vector for this observer, in the GCRS, at the specified time and accuracy.
virtual Velocity	gcrs_velocity_at (const Time &time, enum novas_accuracy accuracy=NOVAS_FULL_ACCURACY) const
	Returns the geocentric geometric velocity vector for this observer, in the GCRS, at the specified time and accuracy.
Protected Member Functions inherited from supernovas::Validating
	Validating ()
	dummy constructor;

Additional Inherited Members
Static Public Member Functions inherited from supernovas::Observer
static GeocentricObserver	at_geocenter ()
	Returns a fictitious observer placed at the location of the geocenter.
static SolarSystemObserver	at_ssb ()
	Returns a fictitious observer placed at the location of the Solar-System Barycenter (SSB).
static DynamicObserver	dynamic (novas_state_provider state_call, const void *arg=NULL)
	Returns a new observer with dynamically determined position / velocity via a designated state provider function.
static GeocentricObserver	in_earth_orbit (const Position &pos, const Velocity &vel)
	Returns a new observer orbiting the Earth.
static EphemerisObserver	in_ephemeris (const std::string &name, long id)
	Returns a new observer defined by an ephemeris position, that can be obtained by the configured novas_ephem_provider call.
static OrbitalObserver	in_orbital (const Orbital &orbit, const std::string &name="orbital observer")
	Returns a new observer, whose location is defined by Keplerian orbital parameters around a major Solar System body.
static SolarSystemObserver	in_solar_system (const Position &pos, const Velocity &vel)
	Returns a new observer in some Solar-system location.
static GeodeticObserver	moving_on_earth (const Site &site, const EOP &eop, const ScalarVelocity &horizontal, const Angle &direction, const ScalarVelocity &vertical=ScalarVelocity::stationary())
	Instantiates a new observer that is moving relative to Earth's surface, such as an airborne observer.
static GeodeticObserver	moving_on_earth (const Site &site, const Velocity &itrs_vel, const EOP &eop=EOP::undefined())
	Returns a new observer that is moving, at some velocitym relative to Earth's surface, such as an airborne aircraft or balloon based observatory.
static GeodeticObserver	on_earth (const Site &site, const EOP &eop=EOP::undefined())
	Returns a new observer located at a fixed observing site.
static const Observer &	undefined ()
	Returns a reference to a statically defined standard invalid observer.
Protected Attributes inherited from supernovas::Observer
observer	_observer = {}
	stored observer data
Protected Attributes inherited from supernovas::Validating
bool	_valid = false
	the state variable.

Detailed Description

An observer whose momentary position and velocity is defined dynamically through a state provider function.

Constructor & Destructor Documentation

◆ DynamicObserver()

supernovas::DynamicObserver::DynamicObserver	(	novas_state_provider	call,
		const void *	arg = NULL )

explicit

Instantiates a new observer with dynamically determined position / velocity via a designated state provider function.

Parameters

call	the state provider function
arg	(optional) pointer argument to pass to the state provider function. It may be NULL if the function does not use externally supplied data. (default: NULL)