JupiterMoons Class Reference

#include <jupitermoons.h>

Inheritance diagram for JupiterMoons:

Public Member Functions
	JupiterMoons ()
virtual	~JupiterMoons ()
virtual void	findPosition (const KSNumbers *num, const KSPlanetBase *jup, const KSSun *sunptr)
Public Member Functions inherited from PlanetMoons
	PlanetMoons ()
virtual	~PlanetMoons ()
void	EquatorialToHorizontal (const dms *LSTh, const dms *lat)
bool	inFront (int id) const
TrailObject *	moon (int id)
QString	name (int id) const
int	nMoons () const
double	x (int i) const
double	y (int i) const
double	z (int i) const

Additional Inherited Members
Protected Attributes inherited from PlanetMoons
QVector< bool >	InFront
QVector< TrailObject * >	Moon
QVector< double >	XP
QVector< double >	YP
QVector< double >	ZP

Detailed Description

Implements the four largest moons of Jupiter.

See Chapter 43 of "Astronomical Algorithms"by Jean Meeus for details

TODO: make the moons SkyObjects, rather than just points.

Author

Jason Harris

Version

1.0

Definition at line 41 of file jupitermoons.h.

Constructor & Destructor Documentation

JupiterMoons::JupiterMoons

(

)

Constructor.

Assign the name of each moon, and initialize their XYZ positions to zero.

Definition at line 25 of file jupitermoons.cpp.

JupiterMoons::~JupiterMoons ( )

virtual

Destructor.

Delete moon objects.

Definition at line 39 of file jupitermoons.cpp.

Member Function Documentation

void JupiterMoons::findPosition ( const KSNumbers *  num, const KSPlanetBase *  jup, const KSSun *  sunptr  )

virtual

Find the positions of each Moon, relative to Jupiter.

We use an XYZ coordinate system, centered on Jupiter, where the X-axis corresponds to Jupiter's Equator, the Y-Axis is parallel to Jupiter's Poles, and the Z-axis points along the line joining the Earth and Jupiter. Once the XYZ positions are known, this function also computes the RA,Dec positions of each Moon, and sets the inFront bool variable to indicate whether the Moon is nearer to us than Jupiter or not (this information is used to determine whether the Moon should be drawn on top of Jupiter, or vice versa).

See "Astronomical Algorithms" bu Jean Meeus, Chapter 43.

Parameters

num	pointer to the KSNumbers object describing the date/time at which to find the positions.
jup	pointer to the jupiter object
sunptr	pointer to the Sun object

Implements PlanetMoons.

Definition at line 42 of file jupitermoons.cpp.

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The documentation for this class was generated from the following files:

• jupitermoons.h
• jupitermoons.cpp