Package gaiasky.util.coord.chebyshev

Class ChebyshevEphemeris

java.lang.Object

gaiasky.util.coord.AbstractOrbitCoordinates

gaiasky.util.coord.chebyshev.ChebyshevEphemeris

All Implemented Interfaces:

IBodyCoordinates

public class ChebyshevEphemeris
extends AbstractOrbitCoordinates

This class provides coordinates for a single body. It is initialized with the Chebyshev data file for that body.

Field Summary

Fields

Modifier and Type	Field	Description
ChebyshevCoefficients	data
String	dataFile

Fields inherited from class gaiasky.util.coord.AbstractOrbitCoordinates

center, entity, instances, logger, orbitName, periodic, scaling

Constructor Summary

Constructors

Constructor	Description
ChebyshevEphemeris()

Method Summary

Modifier and Type	Method	Description
Vector3b	getEclipticCartesianCoordinates(Instant instant, Vector3b out)	Gets ecliptic cartesian coordinates for the given date.
Vector3b	getEclipticSphericalCoordinates(Instant instant, Vector3b out)	Returns the ecliptic coordinates of the body in the out vector for the given date.
Vector3b	getEquatorialCartesianCoordinates(Instant instant, Vector3b out)	Gets equatorial cartesian coordinates for the given date.
boolean	initialize()
Vector3b	position(Instant date, Vector3b out)	Returns a vector with the ephemeris at the given date.
void	setDataFile(String dataFile)

Methods inherited from class gaiasky.util.coord.AbstractOrbitCoordinates

doneLoading, getData, getInstance, getInstances, getOrbitName, setCenter, setCenterkm, setCenterpc, setCentre, setOrbitname, setOrbitName, setPeriodic, setScaling, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

dataFile

public String dataFile

data

public ChebyshevCoefficients data

Constructor Details

ChebyshevEphemeris

public ChebyshevEphemeris()

Method Details

setDataFile

public void setDataFile(String dataFile)

initialize

public boolean initialize()

position

public Vector3b position(Instant date,
 Vector3b out)

Returns a vector with the ephemeris at the given date. The position is given in internal units.

Parameters:

date - The date as a Java Instant.

out - The vector to return the result.

Returns:

The out vector if we could retrieve the position, or null if the time is out of range for the current data file.

getEclipticSphericalCoordinates

public Vector3b getEclipticSphericalCoordinates(Instant instant,
 Vector3b out)

Description copied from interface: IBodyCoordinates

Returns the ecliptic coordinates of the body in the out vector for the given date.

Parameters:

instant - The instant.

out - The out vector with the ecliptic coordinates in internal units.

Returns:

The out vector for chaining.

getEclipticCartesianCoordinates

public Vector3b getEclipticCartesianCoordinates(Instant instant,
 Vector3b out)

Description copied from interface: IBodyCoordinates

Gets ecliptic cartesian coordinates for the given date.

Parameters:

instant - The instant.

out - The out vector where the ecliptic cartesian coordinates will be.

Returns:

The out vector for chaining, or null if the date is out of range, in case of non-elliptical orbits such as Gaia.

getEquatorialCartesianCoordinates

public Vector3b getEquatorialCartesianCoordinates(Instant instant,
 Vector3b out)

Description copied from interface: IBodyCoordinates

Gets equatorial cartesian coordinates for the given date.

Parameters:

instant - The instant.

out - The out vector where the equatorial cartesian coordinates will be.

Returns:

The out vector for chaining, or null if the date is out of range, in case of non-elliptical orbits such as Gaia.