The base abstract class for sky objects used in Stellarium like Stars, Planets, Constellations etc... More...

#include <StelObject.hpp>

Public Types
enum	InfoStringGroupFlags { Name = 0x00000001, CatalogNumber = 0x00000002, Magnitude = 0x00000004, RaDecJ2000 = 0x00000008, RaDecOfDate = 0x00000010, AltAzi = 0x00000020, Distance = 0x00000040, Size = 0x00000080, Velocity = 0x00000100, Extra = 0x00000200, HourAngle = 0x00000400, AbsoluteMagnitude = 0x00000800, GalacticCoord = 0x00001000, SupergalacticCoord = 0x00002000, ObjectType = 0x00004000, EclipticCoordJ2000 = 0x00008000, EclipticCoordOfDate = 0x00010000, IAUConstellation = 0x00020000, SiderealTime = 0x00040000, RTSTime = 0x00080000, NoFont = 0x00100000, PlainText = 0x00200000 }
	Used as named bitfield flags as specifiers to filter results of getInfoString. More...

Public Member Functions
virtual SphericalRegionP	getRegion () const
	Default implementation of the getRegion method. More...

virtual Vec3d	getPointInRegion () const
	Default implementation of the getPointInRegion method. More...

virtual QString	getInfoString (const StelCore *core, const InfoStringGroup &flags=StelObject::AllInfo) const =0
	Write I18n information about the object in QString. More...

virtual QVariantMap	getInfoMap (const StelCore *core) const
	Return a key/value map with data about an object's position, magnitude and so on. More...

virtual QString	getType () const =0
	Return object's type. It should be the name of the class.

virtual QString	getID () const =0
	Returns a unique identifier for this object. More...

virtual QString	getEnglishName () const =0
	Return object's name in english.

virtual QString	getNameI18n () const =0
	Return translated object's name.

virtual Vec3d	getJ2000EquatorialPos (const StelCore *core) const =0
	Get observer-centered equatorial coordinates at equinox J2000.

Vec3d	getEquinoxEquatorialPos (const StelCore *core) const
	Get observer-centered equatorial coordinate at the current equinox The frame has its Z axis at the planet's current rotation axis At time 2000-01-01 this frame is almost the same as J2000, but ONLY if the observer is on earth.

Vec3d	getEquinoxEquatorialPosApparent (const StelCore *core) const
	Like getEquinoxEquatorialPos(core), but always adds refraction correction to the position.

Vec3d	getEquinoxEquatorialPosAuto (const StelCore *core) const
	Like getEquinoxEquatorialPos(core), but adds refraction correction to the position if atmosphere is active.

Vec3d	getGalacticPos (const StelCore *core) const
	Get observer-centered galactic coordinates.

Vec3d	getSupergalacticPos (const StelCore *core) const
	Get observer-centered supergalactic coordinates.

Vec3d	getSiderealPosGeometric (const StelCore *core) const
	Get observer-centered hour angle + declination (at current equinox) It is the geometric position, i.e. More...

Vec3d	getSiderealPosApparent (const StelCore *core) const
	Get observer-centered hour angle + declination (at current equinox) It is the apparent position, i.e. More...

Vec3d	getAltAzPosGeometric (const StelCore *core) const
	Get observer-centered alt/az position It is the geometric position, i.e. More...

Vec3d	getAltAzPosApparent (const StelCore *core) const
	Get observer-centered alt/az position It is the apparent position, i.e. More...

Vec3d	getAltAzPosAuto (const StelCore *core) const
	Get observer-centered alt/az position It is the automatic position, i.e. More...

bool	isAboveHorizon (const StelCore *core) const
	Checking position an object above mathematical horizon for current location. More...

bool	isAboveRealHorizon (const StelCore *core) const
	Checking position an object above real horizon for current location. More...

Vec3f	getRTSTime (StelCore *core) const
	Get today's time of rise, transit and set for celestial object for current location. More...

virtual float	getVMagnitude (const StelCore *core) const
	Return object's apparent V magnitude as seen from observer, without including extinction.

float	getVMagnitudeWithExtinction (const StelCore *core) const
	Return object's apparent V magnitude as seen from observer including extinction. More...

virtual float	getSelectPriority (const StelCore *) const
	Return a priority value which is used to discriminate objects by priority As for magnitudes, the lower is the higher priority.

virtual Vec3f	getInfoColor () const
	Get a color used to display info about the object.

virtual double	getCloseViewFov (const StelCore *) const
	Return the best FOV in degree to use for a close view of the object.

virtual double	getSatellitesFov (const StelCore *) const
	Return the best FOV in degree to use for a global view of the object satellite system (if there are satellites)

virtual double	getParentSatellitesFov (const StelCore *) const

virtual double	getAngularSize (const StelCore *core) const =0
	Return the angular radius of a circle containing the object as seen from the observer with the circle center assumed to be at getJ2000EquatorialPos(). More...

Static Public Attributes
static const InfoStringGroupFlags	AllInfo
	A pre-defined set of specifiers for the getInfoString flags argument to getInfoString. More...

static const InfoStringGroupFlags	ShortInfo = (InfoStringGroupFlags)(Name\|CatalogNumber\|Magnitude\|RaDecJ2000)
	A pre-defined set of specifiers for the getInfoString flags argument to getInfoString.

Protected Member Functions
QString	getCommonInfoString (const StelCore *core, const InfoStringGroup &flags) const
	Format the positional info string containing J2000/of date/altaz/hour angle positions and constellation, sidereal time, etc. for the object.

virtual QString	getMagnitudeInfoString (const StelCore *core, const InfoStringGroup &flags, const double alt_app, const int decimals=1) const
	Format the magnitude info string for the object. More...

void	postProcessInfoString (QString &str, const InfoStringGroup &flags) const
	Apply post processing on the info string.

Detailed Description

Normally you should use StelObjectP instead of StelObject* which have by default the same behaviour, but which can be added reference counting if needed.

See also: StelObjectP

Member Enumeration Documentation

◆ InfoStringGroupFlags

enum StelObject::InfoStringGroupFlags

The precise definition of these should be documented in the getInfoString documentation for the derived classes for all specifiers which are defined in that derivative. Use InfoStringGroup instead.

Enumerator
Name	An object's name.
CatalogNumber	Catalog numbers.
Magnitude	Magnitude related data.
RaDecJ2000	The equatorial position (J2000 ref)
RaDecOfDate	The equatorial position (of date)
AltAzi	The position (Altitude/Azimuth)
Distance	Info about an object's distance.
Size	Info about an object's size.
Velocity	Info about object's velocity.
Extra	Derived class-specific extra fields.
HourAngle	The hour angle + DE (of date)
AbsoluteMagnitude	The absolute magnitude.
GalacticCoord	The galactic position.
SupergalacticCoord	The supergalactic position.
ObjectType	The type of the object (star, planet, etc.)
EclipticCoordJ2000	The ecliptic position (J2000.0 ref) [+ XYZ of VSOP87A (used mainly for debugging, not public)].
EclipticCoordOfDate	The ecliptic position (of date)
IAUConstellation	Three-letter constellation code (And, Boo, Cas, ...)
SiderealTime	Mean and Apparent Sidereal Time.
RTSTime	Time of rise, transit and set of celestial object.
PlainText	Strip HTML tags from output.

Member Function Documentation

◆ getAltAzPosApparent()

Vec3d StelObject::getAltAzPosApparent ( const StelCore * core ) const

taking the refraction effect into account. The frame has its Z axis at the zenith

◆ getAltAzPosAuto()

Vec3d StelObject::getAltAzPosAuto ( const StelCore * core ) const

taking the refraction effect into account if atmosphere is on. The frame has its Z axis at the zenith

◆ getAltAzPosGeometric()

Vec3d StelObject::getAltAzPosGeometric ( const StelCore * core ) const

without taking refraction effect into account. The frame has its Z axis at the zenith

◆ getAngularSize()

virtual double StelObject::getAngularSize ( const StelCore * core ) const

pure virtual

Returns: radius in degree. This value is the apparent angular size of the object, and is independent of the current FOV.

Implemented in Planet, Nebula, Satellite, NomenclatureItem, MeteorShower, Exoplanet, Pulsar, StarWrapper< Star >, StarWrapper< Star2 >, StarWrapper< Star3 >, StarWrapper< Star1 >, Quasar, Supernova, Nova, TelescopeClient, and CustomObject.

◆ getID()

virtual QString StelObject::getID ( ) const

pure virtual

The ID should be unique for all objects of the same type, but may freely conflict with IDs of other types, so getType() must also be tested.

With this it should be possible to at least identify the same object in a different instance of Stellarium running the same version, but it would even be better if the ID provides some degree of forward-compatibility. For some object types (e.g. planets) this may simply return getEnglishName(), but better candidates may be official designations or at least (stable) internal IDs.

An object may have multiple IDs (different catalog numbers, etc). StelObjectMgr::searchByID() should search through all ID variants, but this method only returns one of them.

Implemented in Planet, Nebula, Satellite, MeteorShower, NomenclatureItem, Exoplanet, Pulsar, TelescopeClient, Quasar, Supernova, Nova, CustomObject, and StarWrapperBase.

◆ getInfoMap()

virtual QVariantMap StelObject::getInfoMap ( const StelCore * core ) const

virtual

Useful in a context like scripting. Derived objects can add their own special information tags.

Parameters

core	the current StelCore

Returns

a map of object data. Keys:

above-horizon : true, if celestial body is above horizon
altitude : apparent altitude angle in decimal degrees
azimuth : apparent azimuth angle in decimal degrees
altitude-geometric : geometric altitude angle in decimal degrees
azimuth-geometric : geometric azimuth angle in decimal degrees
airmass : number of airmasses the object's light had to pass through the atmosphere. For negative altitudes this number may be meaningless.
ra : right ascension angle (current date frame) in decimal degrees
dec : declination angle (current date frame) in decimal degrees
raJ2000 : right ascension angle (J2000 frame) in decimal degrees
decJ2000 : declination angle (J2000 frame) in decimal degrees
glong : galactic longitude in decimal degrees
glat : galactic latitude in decimal degrees
sglong : supergalactic longitude in decimal degrees
sglat : supergalactic latitude in decimal degrees
elong : ecliptic longitude in decimal degrees (on Earth only!)
elat : ecliptic latitude in decimal degrees (on Earth only!)
elongJ2000 : ecliptic longitude (Earth's J2000 frame) in decimal degrees
elatJ2000 : ecliptic latitude (Earth's J2000 frame) in decimal degrees
vmag : visual magnitude
vmage : visual magnitude (after atmospheric extinction)
size: angular size in radians
size-dd : angular size in decimal degrees
size-deg : angular size in decimal degrees (formatted string)
size-dms : angular size in DMS format
rise : time of rise in HM format
rise-dhr : time of rise in decimal hours
transit : time of transit in HM format
transit-dhr : time of transit in decimal hours
set : time of set in HM format
set-dhr : time of set in decimal hours
name : english name of the object
localized-name : localized name

Note: Coordinate values may need modulo operation to bring them into ranges [0..360].

Reimplemented in Planet, Satellite, Nebula, StarWrapper1, MeteorShower, Exoplanet, Pulsar, Quasar, Comet, Supernova, and Nova.

◆ getInfoString()

virtual QString StelObject::getInfoString	(	const StelCore *	core,
		const InfoStringGroup &	flags = `StelObject::AllInfo`
	)		const

pure virtual

Parameters

core	the StelCore object to use
flags	a set of InfoStringGroup flags which are used to filter the return value - including specified types of information and altering the output format.

Returns: an HTML string containing information about the StelObject.

Implemented in Planet, Nebula, Satellite, NomenclatureItem, StarWrapper1, MeteorShower, Exoplanet, Pulsar, Quasar, Comet, TelescopeClient, Supernova, MinorPlanet, Nova, StarWrapperBase, and CustomObject.

◆ getMagnitudeInfoString()

virtual QString StelObject::getMagnitudeInfoString	(	const StelCore *	core,
		const InfoStringGroup &	flags,
		const double	alt_app,
		const int	decimals = `1`
	)		const

protectedvirtual

Parameters

core
flags
alt_app	apparent altitude (for atmosphere-dependent calculations)
decimals	significant digits after the comma.

Reimplemented in Nebula, and Supernova.

◆ getPointInRegion()

virtual Vec3d StelObject::getPointInRegion ( ) const

inlinevirtual

Return the J2000 Equatorial Position of the object.

Implements StelRegionObject.

◆ getRegion()

virtual SphericalRegionP StelObject::getRegion ( ) const

inlinevirtual

Return the spatial region of the object.

Implements StelRegionObject.

Reimplemented in Nebula.

◆ getRTSTime()

Vec3f StelObject::getRTSTime ( StelCore * core ) const

Returns: Vec3f - time of rise, transit and set; decimal hours

Note: The value -1.f is used as undefined value

◆ getSiderealPosApparent()

Vec3d StelObject::getSiderealPosApparent ( const StelCore * core ) const

taking the refraction effect into account. The frame has its Z axis at the planet's current rotation axis

◆ getSiderealPosGeometric()

Vec3d StelObject::getSiderealPosGeometric ( const StelCore * core ) const

without taking refraction effect into account. The frame has its Z axis at the planet's current rotation axis

◆ getVMagnitudeWithExtinction()

float StelObject::getVMagnitudeWithExtinction ( const StelCore * core ) const

Extinction obviously only if atmosphere=on.

◆ isAboveHorizon()

bool StelObject::isAboveHorizon ( const StelCore * core ) const

Returns: true if object an above mathematical horizon

◆ isAboveRealHorizon()

bool StelObject::isAboveRealHorizon ( const StelCore * core ) const

Returns: true if object an above real horizon (uses test for landscapes)

Field Documentation

◆ AllInfo

const InfoStringGroupFlags StelObject::AllInfo

static

Public Types

Public Member Functions

Static Public Attributes

Protected Member Functions

Detailed Description

Member Enumeration Documentation

◆ InfoStringGroupFlags

Member Function Documentation

◆ getAltAzPosApparent()

◆ getAltAzPosAuto()

◆ getAltAzPosGeometric()

◆ getAngularSize()

◆ getID()

◆ getInfoMap()

◆ getInfoString()

◆ getMagnitudeInfoString()

◆ getPointInRegion()

◆ getRegion()

◆ getRTSTime()

◆ getSiderealPosApparent()

◆ getSiderealPosGeometric()

◆ getVMagnitudeWithExtinction()

◆ isAboveHorizon()

◆ isAboveRealHorizon()

Field Documentation

◆ AllInfo