MayaTzolkinCalendar Class Reference

The Maya Tzolkin was a 260-day calendar consisting of a 13-day count and a 20-name count. More...

#include <MayaTzolkinCalendar.hpp>

Public Slots
virtual void	retranslate () Q_DECL_OVERRIDE
virtual void	setJD (double JD) Q_DECL_OVERRIDE
	Set a calendar date from the Julian day number.
virtual void	setDate (QVector< int > parts) Q_DECL_OVERRIDE
	set date from a vector of calendar date elements sorted from the largest to the smallest. More...
virtual QStringList	getDateStrings () const Q_DECL_OVERRIDE
	get a stringlist of calendar date elements sorted from the largest to the smallest. More...
Public Slots inherited from Calendar
virtual void	retranslate ()=0
	Translate e.g. stringlists of part names.
virtual void	setJD (double JD)=0
	Set a calendar date from the Julian day number Subclasses set JD and compute the parts and possibly other data This triggers the partsChanged() signal.
virtual double	getJD () const
	Get Julian day number from a calendar date.
virtual void	setDate (QVector< int > parts)=0
	set date from a vector of calendar date elements sorted from the largest to the smallest. More...
virtual QVector< int >	getDate () const
	get a vector of calendar date elements sorted from the largest to the smallest. More...
virtual QStringList	getDateStrings () const =0
	get a stringlist of calendar date elements sorted from the largest to the smallest. More...
virtual QString	getFormattedDateString () const
	get a formatted complete string for a date. The default implementation just concatenates all strings from getDateStrings() with a space in between.

Public Member Functions
	MayaTzolkinCalendar (double jd)
Public Member Functions inherited from Calendar
	Calendar (double jd)
int	rdCorrSum (QVector< int >factors, int corr)

Static Public Member Functions
static QVector< int >	mayanTzolkinFromFixed (int rd)
	usually internal, but used by MayaHaabCalendar.
static QString	tzolkinName (int i)
	return Tzolkin name for index [0...19]
static int	mayanTzolkinOrdinal (QVector< int > tzolkin)
Static Public Member Functions inherited from Calendar
static double	momentFromJD (double jd, bool respectUTCoffset=true)
	Interfacing function from Reingold/Dershowitz: Calendrical Calculations Returns a "moment" in RD that represents JD. More...
static int	fixedFromMoment (double rd)
static double	timeFromMoment (double rd)
static int	fixedFromJD (double jd, bool respectUTCoffset=true)
	Interfacing function from Reingold/Dershowitz: Calendrical Calculations Returns a fixed date in RD that represents noon of JD. More...
static double	momentFromMJD (double mjd)
static double	jdFromMoment (double rd, bool respectUTCoffset=true)
	interfacing function from Reingold/Dershowitz: Calendrical Calculations Returns a JD from an RD "moment" (including fractions of day) Stellarium extension: optionally includes local time zone offset. More...
static double	jdFromFixed (double rd, bool respectUTCoffset=true)
	interfacing function from Reingold/Dershowitz: Calendrical Calculations Returns a JD from an RD "moment" (including fractions of day) Stellarium extension: optionally includes local time zone offset. More...
static double	mjdFromFixed (double rd)
static int	dayOfWeekFromFixed (int rd)
	weekday from RD date. CC.UE(1.60).
static int	kdayOnOrBefore (const Calendar::Day k, const int rd)
	@Returns the R.D. of the nearest weekday k on or before rd
static int	kdayOnOrAfter (const Calendar::Day k, const int rd)
	@Returns the R.D. of the nearest weekday k on or after rd
static int	kdayNearest (const Calendar::Day k, const int rd)
	@Returns the R.D. of the nearest weekday k around rd
static int	kdayBefore (const Calendar::Day k, const int rd)
	@Returns the R.D. of the nearest weekday k before rd
static int	kdayAfter (const Calendar::Day k, const int rd)
	@Returns the R.D. of the nearest weekday k after rd
static double	modInterval (double x, double a, double b)
	Interval modulus, CC.UE 1.24. More...
static int	modInterval (int x, int a, int b)
	Interval modulus, CC.UE 1.24: This EXCLUDES the upper limit! Use StelUtils::amod(x, b) for CC's (x)mod[1..b].
static int	rdCorrSum (QVector< int >parts, QVector< int >factors, int corr)
	Reingold-Dershowitz CC.UE 1.48.
static QVector< int >	toRadix (int num, QVector< int >radix)
	Split integer to mixed-radix vector. Reingold-Dershowitz CC.UE 1.42.

Static Public Attributes
static const int	mayanTzolkinEpoch
Static Public Attributes inherited from Calendar
constexpr static const double	J2000 =2451545.0
constexpr static const double	jdEpoch =-1721424.5
constexpr static const double	mjdEpoch =678576.0
constexpr static const int	bogus =-1000000

Additional Inherited Members
Public Types inherited from Calendar
enum	Day {   sunday = 0, monday, tuesday, wednesday,   thursday, friday, saturday }
	enum from CC.UE-ch1.12.
enum	Season { spring = 0, summer = 90, autumn = 180, winter = 270 }
Signals inherited from Calendar
void	partsChanged (QVector< int > parts)
void	jdChanged (double jd)
Protected Attributes inherited from Calendar
double	JD
QVector< int >	parts
	date expressed as JD(UT), including day fraction (ready to interact with the main application)

Detailed Description

The implementation follows CC. The "name" is not a month but also changes every day. The traditional writing is number-name, which is also used in the parts.

Member Function Documentation

getDateStrings

virtual QStringList MayaTzolkinCalendar::getDateStrings ( ) const

virtualslot

dayNumber[1..13]-name

setDate

virtual void MayaTzolkinCalendar::setDate ( QVector< int >  parts )

virtualslot

dayNumber[1..13]-nameIndex[1..20] We face a problem as the date is not unique. We can only find the date before current JD which matches the parts.