Comet Class Reference

#include <Comet.hpp>

Public Member Functions
	Comet (const QString &englishName, double equatorialRadius, double oblateness, Vec3f halocolor, float albedo, float roughness, float outgas_intensity, float outgas_falloff, const QString &texMapName, const QString &objModelName, posFuncType _coordFunc, KeplerOrbit *orbitPtr, OsculatingFunctType *osculatingFunc, bool closeOrbit, bool hidden, const QString &pTypeStr, float dustTailWidthFact=1.5f, float dustTailLengthFact=0.4f, float dustTailBrightnessFact=1.5f)
QVariantMap	getInfoMap (const StelCore *core) const override
	In addition to Planet::getInfoMap(), Comets provides estimates for. More...
float	getVMagnitude (const StelCore *core) const override
	Override for comets. More...
float	getVMagnitude (const StelCore *core, const double eclipseFactor) const override
	Override with additional. More...
void	translateName (const StelTranslator &trans) override
	sets the nameI18 property with the appropriate translation. More...
QString	getEnglishName (void) const override
	Return object's name in english.
QString	getNameI18n (void) const override
	Return translated object's name.
QString	getIAUDesignation () const override
	gets an IAU designation.
void	setAbsoluteMagnitudeAndSlope (const float magnitude, const float slope)
	sets absolute magnitude and slope parameter. More...
void	setIAUDesignation (const QString &designation)
	sets an IAU designation.
void	setExtraDesignations (QStringList codes)
	set date, discovery and perihelion codes of the comet.
void	setDiscoveryData (const QString &date, const QString &name)
	set the discovery circumstances of comet More...
QStringList	getExtraDesignations () const
	get list of comet codes
double	getSiderealPeriod () const override
	get sidereal period for comet, days, or returns 0 if not possible (parabolic, hyperbolic orbit)
void	draw (StelCore *core, float maxMagLabels, const QFont &planetNameFont, const double eclipseFactor) override
	re-implementation of Planet's draw()
void	update (int deltaTime) override
Public Member Functions inherited from Planet
	Planet (const QString &englishName, double equatorialRadius, double oblateness, Vec3f halocolor, float albedo, float roughness, const QString &texMapName, const QString &normalMapName, const QString &ahorizonMapName, const QString &objModelName, posFuncType _coordFunc, Orbit *anOrbitPtr, OsculatingFunctType *osculatingFunc, bool closeOrbit, bool hidden, bool hasAtmosphere, bool hasHalo, const QString &pTypeStr)
QString	getInfoString (const StelCore *core, const InfoStringGroup &flags) const override
	Get a string with data about the Planet. More...
QVariantMap	getInfoMap (const StelCore *core) const override
	In addition to the entries from StelObject::getInfoMap(), Planet objects provide. More...
double	getCloseViewFov (const StelCore *core) const override
	Return the best FOV in degree to use for a close view of the object.
double	getSatellitesFov (const StelCore *core) const override
	Return the best FOV in degree to use for a global view of the object satellite system (if there are satellites)
double	getParentSatellitesFov (const StelCore *core) const override
float	getVMagnitude (const StelCore *core) const override
	This actually calls getVMagnitude(core, 1.0); If there is danger the object is partly obscured (eclipsed), prefer to use getVMagnitude(core, eclipseFactor).
float	getSelectPriority (const StelCore *core) const override
	Return a priority value which is used to discriminate objects by priority As for magnitudes, the lower is the higher priority.
Vec3f	getInfoColor (void) const override
	Get a color used to display info about the object.
QString	getType (void) const override
QString	getObjectType (void) const override
	Get more specific Planet type for scripts. More...
QString	getObjectTypeI18n (void) const override
	Get more specific Planet type for scripts. More...
QString	getID (void) const override
Vec3d	getJ2000EquatorialPos (const StelCore *core) const override
	A Planet's own eclipticPos is in VSOP87 ref. More...
QString	getEnglishName (void) const override
	Return object's name in english.
QString	getNameI18n (void) const override
	Return translated object's name.
QString	getNativeName (void) const
QString	getNativeNameI18n (void) const
QString	getCommonEnglishName (void) const
QString	getCommonNameI18n (void) const
double	getAngularRadius (const StelCore *core) const override
	Get angular semidiameter, degrees. If planet display is artificially enlarged (e.g. Moon upscale), value will also be increased.
virtual bool	hasAtmosphere (void)
virtual bool	hasHalo (void)
bool	hasValidPositionalData (const double JDE, const PositionQuality purpose) const
	Returns whether planet positions are valid and useful for the current simulation time. More...
Vec2d	getValidPositionalDataRange (const PositionQuality purpose) const
	Returns JDE dates of presumably valid data for positional calculation or acceptable range for graphics. More...
float	getAxisRotation (void)
double	getEquatorialRadius (void) const
	Get the equator radius of the planet in AU. More...
double	getOneMinusOblateness (void) const
	Get the value (1-f) for oblateness f=polarRadius/equatorialRadius.
double	getPolarRadius (void) const
	Get the polar radius of the planet in AU. More...
double	getSiderealDay (void) const
	Get duration of sidereal day (earth days, may come from rot_periode or orbit_period (for moons) from ssystem_*.ini)
void	setSiderealPeriod (const double siderealPeriod)
	set duration of sidereal year. More...
double	getMeanSolarDay (void) const
	Get duration of mean solar day, in earth days.
double	getAlbedo (void) const
	Get albedo.
const QString &	getTextMapName () const
PlanetType	getPlanetType () const
Orbit *	getOrbit () const
void	setNativeName (QString planet)
void	setNativeNameMeaning (QString planet)
void	setIAUMoonNumber (const QString &designation)
	set the IAU moon number (designation of the moon), if any.
void	setColorIndexBV (float bv=99.f)
	set value for color index B-V
void	setDiscoveryData (const QString &date, const QString &name)
	set the discovery circumstances of celestial body More...
float	getAbsoluteMagnitude () const
	Return the absolute magnitude (read from file ssystem.ini)
float	getMeanOppositionMagnitude () const
	Return the mean opposition magnitude, defined as V(1,0)+5log10(a(a-1)) A return value of 100 signals invalid result.
double	getMass () const
	Return the mass in kg.
double	getSiderealTime (double JD, double JDE) const
	Compute the axial z rotation (daily rotation around the polar axis) [degrees] to use from equatorial to hour angle based coordinates. More...
Mat4d	getRotEquatorialToVsop87 (void) const
	return a rotation matrix from the planet's equatorial coordinate frame to the VSOP87 (ecliptical J2000) frame. More...
void	setRotEquatorialToVsop87 (const Mat4d &m)
	set a rotation matrix from the planet's equatorial coordinate frame to the VSOP87 (ecliptical J2000) frame. More...
const RotationElements &	getRotationElements (void) const
void	setRotationElements (const QString name, const double _period, const double _offset, const double _epoch, const double _obliquity, const double _ascendingNode, const double _ra0, const double _ra1, const double _de0, const double _de1, const double _w0, const double _w1)
	Set the rotational elements. More...
double	getRotAscendingNode (void) const
	Note: The only place where this is used is to build up orbits for planet moons w.r.t. the parent planet orientation.
double	getRotObliquity (double JDE) const
	return angle between axis and normal of ecliptic plane (or, for a moon, equatorial/reference plane defined by parent). More...
virtual void	computePosition (const StelObserver *observer, const double dateJDE, const Vec3d &aberrationPush)
	Compute the position and orbital velocity in the parent Planet coordinate system and set aberrationPush Does not compute new position when dateJDE is less than deltaJDE away from lastJDE You can add the aberrationPush value according to Edot*lightTime in Explanatory Supplement (2013) formula 7.55.
virtual void	computePosition (const double dateJDE, Vec3d &eclPosition, Vec3d &eclVelocity) const
	Compute the position and orbital velocity in the parent Planet coordinate system, and return them in eclPosition and eclVelocity These may be preferred when we want to avoid setting the actual position (e.g., RTS computation)
void	computeTransMatrix (double JD, double JDE)
	Compute the transformation matrix from the local Planet coordinate to the parent Planet coordinate. More...
Vec4d	getRectangularCoordinates (const double longDeg, const double latDeg, const double altMetres=0.) const
	Retrieve planetocentric rectangular coordinates of a location on the ellipsoid surface, or with altitude altMetres above the ellipsoid surface. More...
Vec4d	getHourlyProperMotion (const StelCore *core) const
	Retrieve the hourly proper motion of Solar system bodies. More...
double	getPhaseAngle (const Vec3d &obsPos) const
	Get the phase angle (radians) for an observer at pos obsPos in heliocentric coordinates (in AU)
bool	isWaning (const Vec3d &observerPosition, const Vec3d &observerVelocity) const
	Check whether the planet is in a waning phase, i.e. its phase angle is increasing.
double	getElongation (const Vec3d &obsPos) const
	Get the elongation angle (radians) for an observer at pos obsPos in heliocentric coordinates (in AU)
double	getSpheroidAngularRadius (const StelCore *core) const
	Get the angular radius (degrees) of the planet spheroid (i.e. without the rings)
float	getPhase (const Vec3d &obsPos) const
	Get the planet phase (illuminated fraction of the planet disk, [0=dark..1=full]) for an observer at pos obsPos in heliocentric coordinates (in AU)
QPair< Vec4d, Vec3d >	getSubSolarObserverPoints (const StelCore *core, bool jupiterGraphical=false) const
	Get planetographic coordinates of subsolar and sub-observer points. More...
bool	isRotatingRetrograde () const
	returns if planet has retrograde rotation
Vec3d	getEclipticPos (double dateJDE) const
	Get the Planet position in the parent Planet ecliptic coordinate in AU.
Vec3d	getEclipticPos () const
	Get the last computed Planet position in the parent Planet ecliptic coordinate in AU.
Vec3d	getHeliocentricEclipticPos () const
	Return the heliocentric ecliptical position.
Vec3d	getHeliocentricEclipticPos (double dateJDE) const
Vec3d	getHeliocentricPos (Vec3d p) const
	Return the heliocentric transformation for local (parentocentric) coordinate. More...
void	setHeliocentricEclipticPos (const Vec3d &pos)
	Propagate the heliocentric coordinates to parentocentric coordinates. More...
Vec3d	getEclipticVelocity () const
	Get the planet velocity around the parent planet in ecliptical coordinates in AU/d.
Vec3d	getHeliocentricEclipticVelocity () const
	Get the planet's heliocentric velocity in the solar system in ecliptical coordinates in AU/d. Required for aberration!
double	computeDistance (const Vec3d &obsHelioPos)
	Compute and return the distance to the given position in heliocentric ecliptical (J2000) coordinates (in AU) Preserves result for later retrieval by getDistance() As side effect, improve fps by juggling update frequency (deltaJDE) for asteroids and other minor bodies. More...
double	getDistance (void) const
	Return the last computed distance to the given position in heliocentric ecliptical (J2000) coordinates (in AU)
void	setRings (Ring *r)
void	setSphereScale (double s)
double	getSphereScale () const
const QSharedPointer< Planet >	getParent (void) const
void	setFlagHints (bool b)
bool	getFlagHints (void) const
void	setFlagLabels (bool b)
bool	getFlagLabels (void) const
void	setFlagNativeName (bool b)
bool	getFlagNativeName (void) const
void	setFlagOrbits (bool b)
bool	getFlagOrbits (void) const
void	drawOrbit (const StelCore *)
QVector< const Planet * >	getCandidatesForShadow () const
	Return the list of planets which project some shadow on this planet.
Vec3d	getAberrationPush () const
virtual Vec4d	getClosestRTSTime (const StelCore *core, const double altitude=0.) const
	Compute times of nearest rise, transit and set for a solar system object for current location. More...
Vec4d	getRTSTime (const StelCore *core, const double altitude=0.) const override
	Adaptation of getClosestRTSTime() to compute times of rise, transit and set for a solar system object for current location and date. More...
void	resetTextures ()
void	replaceTexture (const QString &texName)
Public Member Functions inherited from StelObject
SphericalRegionP	getRegion () const override
	Default implementation of the getRegion method. More...
Vec3d	getPointInRegion () const override
	Default implementation of the getPointInRegion method. More...
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...
float	getParallacticAngle (const StelCore *core) const
	Get parallactic angle, which is the deviation between zenith angle and north angle. [radians].
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...
float	getVMagnitudeWithExtinction (const StelCore *core, const float knownVMag=-1000.f) const
	Return object's apparent V magnitude as seen from observer including extinction. More...
virtual float	getAirmass (const StelCore *core) const
	Return airmass value for the object (for atmosphere-dependent calculations) More...

Static Public Member Functions
static QString	renderDiscoveryDesignationHtml (const QString &plainText)
	renders the subscript in a comet discovery designation with HTML. More...
Static Public Member Functions inherited from Planet
static void	init ()
	Initializes static vars. Must be called before creating first planet.
static ApparentMagnitudeAlgorithm	getApparentMagnitudeAlgorithm ()
static void	setApparentMagnitudeAlgorithm (ApparentMagnitudeAlgorithm algorithm)
static float	getPAsun (const Vec3d &sunPos, const Vec3d &objPos)
	Get the position angle of the illuminated limb of a planet The result depends on the arguments' coordinate system which must be identical. More...
static void	setLabelColor (const Vec3f &lc)
static const Vec3f &	getLabelColor (void)
static void	setOrbitColor (const Vec3f &oc)
static const Vec3f &	getOrbitColor ()
static void	setMajorPlanetOrbitColor (const Vec3f &oc)
static const Vec3f &	getMajorPlanetOrbitColor ()
static void	setMoonOrbitColor (const Vec3f &oc)
static const Vec3f &	getMoonOrbitColor ()
static void	setMinorPlanetOrbitColor (const Vec3f &oc)
static const Vec3f &	getMinorPlanetOrbitColor ()
static void	setDwarfPlanetOrbitColor (const Vec3f &oc)
static const Vec3f &	getDwarfPlanetOrbitColor ()
static void	setCubewanoOrbitColor (const Vec3f &oc)
static const Vec3f &	getCubewanoOrbitColor ()
static void	setPlutinoOrbitColor (const Vec3f &oc)
static const Vec3f &	getPlutinoOrbitColor ()
static void	setScatteredDiscObjectOrbitColor (const Vec3f &oc)
static const Vec3f &	getScatteredDiscObjectOrbitColor ()
static void	setOortCloudObjectOrbitColor (const Vec3f &oc)
static const Vec3f &	getOortCloudObjectOrbitColor ()
static void	setCometOrbitColor (const Vec3f &oc)
static const Vec3f &	getCometOrbitColor ()
static void	setSednoidOrbitColor (const Vec3f &oc)
static const Vec3f &	getSednoidOrbitColor ()
static void	setInterstellarOrbitColor (const Vec3f &oc)
static const Vec3f &	getInterstellarOrbitColor ()
static void	setMercuryOrbitColor (const Vec3f &oc)
static const Vec3f &	getMercuryOrbitColor ()
static void	setVenusOrbitColor (const Vec3f &oc)
static const Vec3f &	getVenusOrbitColor ()
static void	setEarthOrbitColor (const Vec3f &oc)
static const Vec3f &	getEarthOrbitColor ()
static void	setMarsOrbitColor (const Vec3f &oc)
static const Vec3f &	getMarsOrbitColor ()
static void	setJupiterOrbitColor (const Vec3f &oc)
static const Vec3f &	getJupiterOrbitColor ()
static void	setSaturnOrbitColor (const Vec3f &oc)
static const Vec3f &	getSaturnOrbitColor ()
static void	setUranusOrbitColor (const Vec3f &oc)
static const Vec3f &	getUranusOrbitColor ()
static void	setNeptuneOrbitColor (const Vec3f &oc)
static const Vec3f &	getNeptuneOrbitColor ()

Protected Member Functions
QString	getInfoStringName (const StelCore *core, const InfoStringGroup &flags) const override
QString	getInfoStringAbsoluteMagnitude (const StelCore *core, const InfoStringGroup &flags) const override
QString	getInfoStringSize (const StelCore *core, const InfoStringGroup &flags) const override
	Any flag=Size information to be displayed.
QString	getInfoStringExtra (const StelCore *core, const InfoStringGroup &flags) const override
	Any flag=Extra information to be displayed at the end.
QString	getDiscoveryCircumstances () const override
Protected Member Functions inherited from Planet
virtual QString	getInfoStringExtraMag (const StelCore *core, const InfoStringGroup &flags) const
	Any flag=Extra information to be displayed after the magnitude strings.
virtual QString	getInfoStringEloPhase (const StelCore *core, const InfoStringGroup &flags, const bool withIllum) const
	Return elongation and phase angle when flags=Elongation.
virtual QString	getInfoStringPeriods (const StelCore *core, const InfoStringGroup &flags) const
	Return sidereal and synodic periods when flags=Extra.
void	computeModelMatrix (Mat4d &result, bool solarEclipseCase) const
	Used in drawSphere() to compute shadows, and inside a function to derive eclipse sizes. More...
void	computeOrbit ()
	Update the orbit position values.
Vec3f	getCurrentOrbitColor () const
QString	getPlanetLabel () const
	Return the information string "ready to print".
void	draw3dModel (StelCore *core, StelProjector::ModelViewTranformP transfo, float screenRd, double solarEclipseFactor, bool drawOnlyRing=false)
	Draw the 3d model. More...
bool	drawObjModel (StelPainter *painter, float screenRd)
	Draws the OBJ model, assuming it is available. More...
bool	drawObjShadowMap (StelPainter *painter, QMatrix4x4 &shadowMatrix)
bool	ensureObjLoaded ()
	Starts the OBJ loading process, if it has not been done yet. More...
void	drawSphere (StelPainter *painter, float screenRd, bool drawOnlyRing=false)
	Draw the 3D sphere.
void	drawSurvey (StelCore *core, StelPainter *painter)
	Draw the Hips survey.
void	drawHints (const StelCore *core, StelPainter &sPainter, const QFont &planetNameFont)
	Draw the circle and name of the Planet.
PlanetOBJModel *	loadObjModel () const
Protected Member Functions inherited from StelObject
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. More...
virtual QString	getMagnitudeInfoString (const StelCore *core, const InfoStringGroup &flags, const int decimals=1) const
	Format the magnitude info string for the object. More...
QString	getSolarLunarInfoString (const StelCore *core, const InfoStringGroup &flags) const
	Add a section to the InfoString with just horizontal data for the Sun and Moon, when observed from Earth. More...
void	postProcessInfoString (QString &str, const InfoStringGroup &flags) const
	Apply post processing on the info string. More...

Friends
class	SolarSystem

Additional Inherited Members
Public Types inherited from Planet
enum	PlanetType {   isStar , isPlanet , isMoon , isObserver ,   isArtificial , isAsteroid , isPlutino , isComet ,   isDwarfPlanet , isCubewano , isSDO , isOCO ,   isSednoid , isInterstellar , isUNDEFINED }
	numeric typecodes for the type descriptions in ssystem.ini
enum	PlanetOrbitColorStyle { ocsOneColor , ocsGroups , ocsMajorPlanets , ocsMajorPlanetsMinorTypes }
enum	ApparentMagnitudeAlgorithm {   Mueller_1893 , AstronomicalAlmanac_1984 , ExplanatorySupplement_1992 , ExplanatorySupplement_2013 ,   MallamaHilton_2018 , UndefinedAlgorithm , Generic }
enum	PositionQuality { Position , OrbitPlotting }
	enums to indicate for which purpose we check positional quality. More...
Public Types inherited from StelObject
enum	InfoStringGroupFlags {   None = 0x00000000 , Name = 0x00000001 , CatalogNumber = 0x00000002 , Magnitude = 0x00000004 ,   RaDecJ2000 = 0x00000008 , RaDecOfDate = 0x00000010 , AltAzi = 0x00000020 , Distance = 0x00000040 ,   Elongation = 0x00000080 , Size = 0x00000100 , Velocity = 0x00000200 , ProperMotion = 0x00000400 ,   Extra = 0x00000800 , HourAngle = 0x00001000 , AbsoluteMagnitude = 0x00002000 , GalacticCoord = 0x00004000 ,   SupergalacticCoord = 0x00008000 , OtherCoord = 0x00010000 , ObjectType = 0x00020000 , EclipticCoordJ2000 = 0x00040000 ,   EclipticCoordOfDate = 0x00080000 , IAUConstellation = 0x00100000 , SiderealTime = 0x00200000 , RTSTime = 0x00400000 ,   SolarLunarPosition = 0x00800000 , Script = 0x01000000 , DebugAid = 0x02000000 , NoFont = 0x04000000 ,   PlainText = 0x08000000 }
	Used as named bitfield flags as specifiers to filter results of getInfoString. More...
Public Slots inherited from StelObject
virtual void	setExtraInfoString (const InfoStringGroup &flags, const QString &str)
	Allow additions to the Info String. More...
virtual void	addToExtraInfoString (const StelObject::InfoStringGroup &flags, const QString &str)
	Add str to the extra string. More...
QStringList	getExtraInfoStrings (const InfoStringGroup &flags) const
	Retrieve an (unsorted) QStringList of all extra info strings that match flags. More...
void	removeExtraInfoStrings (const InfoStringGroup &flags)
	Remove the extraInfoStrings with the given flags. More...
Data Fields inherited from Planet
bool	flagNativeName
LinearFader	orbitFader
Vec3d	orbit [ORBIT_SEGMENTS+1]
double	deltaJDE
double	deltaOrbitJDE
bool	closeOrbit
Static Public Attributes inherited from Planet
static const QString	PLANET_TYPE
static Vec3f	orbitColor
static Vec3f	orbitMajorPlanetsColor
static Vec3f	orbitMoonsColor
static Vec3f	orbitMinorPlanetsColor
static Vec3f	orbitDwarfPlanetsColor
static Vec3f	orbitCubewanosColor
static Vec3f	orbitPlutinosColor
static Vec3f	orbitScatteredDiscObjectsColor
static Vec3f	orbitOortCloudObjectsColor
static Vec3f	orbitCometsColor
static Vec3f	orbitSednoidsColor
static Vec3f	orbitInterstellarColor
static Vec3f	orbitMercuryColor
static Vec3f	orbitVenusColor
static Vec3f	orbitEarthColor
static Vec3f	orbitMarsColor
static Vec3f	orbitJupiterColor
static Vec3f	orbitSaturnColor
static Vec3f	orbitUranusColor
static Vec3f	orbitNeptuneColor
static PlanetOrbitColorStyle	orbitColorStyle
Static Public Attributes inherited from StelObject
static constexpr InfoStringGroup	AllInfo
	A pre-defined "all available" set of specifiers for the getInfoString flags argument to getInfoString. More...
static constexpr InfoStringGroup	DefaultInfo
	A pre-defined "default" set of specifiers for the getInfoString flags argument to getInfoString It appears useful to propose this set as post-install settings and let users configure more on demand. More...
static constexpr InfoStringGroup	ShortInfo = static_cast<InfoStringGroup>(Name|CatalogNumber|Magnitude|RaDecJ2000)
	A pre-defined "shortest useful" set of specifiers for the getInfoString flags argument to getInfoString.
Protected Attributes inherited from Planet
QString	englishName
QString	nameI18
QString	nativeName
QString	nativeNameMeaning
QString	nativeNameMeaningI18n
QString	texMapName
QString	normalMapName
QString	horizonMapName
RotationElements	re
double	siderealPeriod
double	equatorialRadius
double	oneMinusOblateness
Vec3d	eclipticPos
Vec3d	eclipticVelocity
Vec3d	aberrationPush
Vec3d	screenPos
Vec3f	haloColor
float	absoluteMagnitude
double	massKg
float	albedo
float	roughness
float	outgas_intensity
float	outgas_falloff
Mat4d	rotLocalToParent
float	axisRotation
StelTextureSP	texMap
StelTextureSP	normalMap
StelTextureSP	horizonMap
PlanetOBJModel *	objModel
QFuture< PlanetOBJModel * > *	objModelLoader
QString	objModelPath
HipsSurveyP	survey
Ring *	rings
double	distance
double	sphereScale
double	lastJDE
posFuncType	coordFunc
Orbit *	orbitPtr
OsculatingFunctType *const	osculatingFunc
QSharedPointer< Planet >	parent
QList< QSharedPointer< Planet > >	satellites
LinearFader	hintFader
LinearFader	labelsFader
bool	flagLabels
bool	hidden
bool	atmosphere
bool	halo
PlanetType	pType
bool	multisamplingEnabled_
bool	planetShadowsSupersampEnabled_
QOpenGLFunctions *	gl
Static Protected Attributes inherited from Planet
static StelTextureSP	texEarthShadow
static ApparentMagnitudeAlgorithm	vMagAlgorithm
static Vec3f	labelColor
static StelTextureSP	hintCircleTex
static const QMap< PlanetType, QString >	pTypeMap
static const QMap< QString, QString >	nPlanetMap
static bool	drawMoonHalo
static bool	drawSunHalo
static bool	permanentDrawingOrbits
	If true, planet orbits will be drawn even if planet is off screen.
static int	orbitsThickness

Detailed Description

Author

Bogdan Marinov, Georg Zotti (orbit computation enhancements, tails)

Some of the code in this class is re-used from the parent Planet class.

Member Function Documentation

getInfoMap()

QVariantMap Comet::getInfoMap ( const StelCore *  core ) const

overridevirtual

In addition to Planet::getInfoMap(), Comets provides estimates for.

• tail-length-km
• coma-diameter-km using the formula from Guide found by the GSoC2012 initiative at http://www.projectpluto.com/update7b.htm#comet_tail_formula

Reimplemented from StelObject.

getVMagnitude() [1/2]

float Comet::getVMagnitude ( const StelCore *  core ) const

overridevirtual

Override for comets.

When observer is on an "Observer" planet, the magnitude reported is heliocentric (seen from the Sun). This allows observing comets belt from far away while still seeing the tail.

Reimplemented from StelObject.

getVMagnitude() [2/2]

float Comet::getVMagnitude ( const StelCore *  core, const double  eclipseFactor  ) const

overridevirtual

Override with additional.

Parameters

eclipseFactor.

The factor is ignored.

Reimplemented from Planet.

renderDiscoveryDesignationHtml()

static QString Comet::renderDiscoveryDesignationHtml ( const QString &  plainText )

static

renders the subscript in a comet discovery designation with HTML.

This subscript only ever appears in the super rare case when a comet is first labeled as asteroid.

setAbsoluteMagnitudeAndSlope()

void Comet::setAbsoluteMagnitudeAndSlope	(	const float	magnitude,
		const float	slope
	)

sets absolute magnitude and slope parameter.

These are the parameters in the IAU's two-parameter magnitude system for comets. They are used to calculate the apparent magnitude at different distances from the Sun. They are not used in the same way as the same parameters in MinorPlanet.

setDiscoveryData()

void Comet::setDiscoveryData ( const QString &  date, const QString &  name  )

inline

set the discovery circumstances of comet

Parameters

date	of discovery
name	of discoverer

translateName()

void Comet::translateName ( const StelTranslator &  trans )

overridevirtual

sets the nameI18 property with the appropriate translation.

Function overridden to handle the problem with name conflicts.

Reimplemented from Planet.