StelCore.hpp   StelCore.hpp 
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StephensonMorrison1995, //!< Stephenson & Morrison ( 1995) algorithm for DeltaT StephensonMorrison1995, //!< Stephenson & Morrison ( 1995) algorithm for DeltaT
Stephenson1997, //!< Stephenson (1997) algor ithm for DeltaT Stephenson1997, //!< Stephenson (1997) algor ithm for DeltaT
ChaprontMeeus, //!< Chapront, Chapront-Touz e & Francou (1997) & Meeus (1998) algorithm for DeltaT ChaprontMeeus, //!< Chapront, Chapront-Touz e & Francou (1997) & Meeus (1998) algorithm for DeltaT
JPLHorizons, //!< JPL Horizons algorithm for DeltaT JPLHorizons, //!< JPL Horizons algorithm for DeltaT
MeeusSimons, //!< Meeus & Simons (2000) a lgorithm for DeltaT MeeusSimons, //!< Meeus & Simons (2000) a lgorithm for DeltaT
MontenbruckPfleger, //!< Montenbruck & Pfleger ( 2000) algorithm for DeltaT MontenbruckPfleger, //!< Montenbruck & Pfleger ( 2000) algorithm for DeltaT
ReingoldDershowitz, //!< Reingold & Dershowitz ( 2002, 2007) algorithm for DeltaT ReingoldDershowitz, //!< Reingold & Dershowitz ( 2002, 2007) algorithm for DeltaT
MorrisonStephenson2004, //!< Morrison & Stephenson ( 2004, 2005) algorithm for DeltaT MorrisonStephenson2004, //!< Morrison & Stephenson ( 2004, 2005) algorithm for DeltaT
Reijs, //!< Reijs (2006) algorithm for DeltaT Reijs, //!< Reijs (2006) algorithm for DeltaT
EspenakMeeus, //!< Espenak & Meeus (2006) algorithm for DeltaT (Recommended, default) EspenakMeeus, //!< Espenak & Meeus (2006) algorithm for DeltaT (Recommended, default)
Banjevic, //!< Banjevic (2006) algorit
hm for DeltaT
IslamSadiqQureshi, //!< Islam, Sadiq & Qureshi
(2008 + revisited 2013) algorithm for DeltaT (6 polynomials)
Custom //!< User defined coefficien ts for quadratic equation for DeltaT Custom //!< User defined coefficien ts for quadratic equation for DeltaT
}; };
StelCore(); StelCore();
virtual ~StelCore(); virtual ~StelCore();
//! Init and load all main core components. //! Init and load all main core components.
void init(class StelRenderer* renderer); void init(class StelRenderer* renderer);
//! Update all the objects with respect to the time. //! Update all the objects with respect to the time.
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//! @param durationIfPlanetChange direction of view + planet travel move duration in s. //! @param durationIfPlanetChange direction of view + planet travel move duration in s.
//! This is used only if the destination planet is different from th e starting one. //! This is used only if the destination planet is different from th e starting one.
void moveObserverTo(const StelLocation& target, double duration=1., double durationIfPlanetChange=1.); void moveObserverTo(const StelLocation& target, double duration=1., double durationIfPlanetChange=1.);
// Conversion in standar Julian time format // Conversion in standar Julian time format
static const double JD_SECOND; static const double JD_SECOND;
static const double JD_MINUTE; static const double JD_MINUTE;
static const double JD_HOUR; static const double JD_HOUR;
static const double JD_DAY; static const double JD_DAY;
//! Get the sideral time shifted by the observer longitude //! Get the sidereal time shifted by the observer longitude
//! @return the locale sideral time in radian //! @return the local sidereal time in radian
double getLocalSideralTime() const; double getLocalSideralTime() const;
//! Get the duration of a sideral day for the current observer in da y. //! Get the duration of a sidereal day for the current observer in d ay.
double getLocalSideralDayLength() const; double getLocalSideralDayLength() const;
//! Get the duration of a sidereal year for the current observer in
days.
double getLocalSideralYearLength() const;
//! Return the startup mode, can be preset|Preset or anything else //! Return the startup mode, can be preset|Preset or anything else
QString getStartupTimeMode(); QString getStartupTimeMode();
void setStartupTimeMode(const QString& s); void setStartupTimeMode(const QString& s);
//! Get Delta-T estimation for a given date. //! Get Delta-T estimation for a given date.
//! @param jDay the date and time expressed as a julian day //! @param jDay the date and time expressed as a julian day
//! @return Delta-T in seconds //! @return Delta-T in seconds
//! @note Thanks to Rob van Gent which create a collection from many formulas for calculation of Delta-T: http://www.staff.science.uu.nl/~gent0 113/deltat/deltat.htm //! @note Thanks to Rob van Gent which create a collection from many formulas for calculation of Delta-T: http://www.staff.science.uu.nl/~gent0 113/deltat/deltat.htm
double getDeltaT(double jDay) const; double getDeltaT(double jDay) const;
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