org.orekit.time

Interface TimeScale

All Superinterfaces:

Serializable

All Known Implementing Classes:

GalileoScale, GLONASSScale, GMSTScale, GPSScale, QZSSScale, TAIScale, TCBScale, TCGScale, TDBScale, TTScale, UT1Scale, UTCScale

public interface TimeScale
extends Serializable

Interface for time scales.

This is the interface representing all time scales. Time scales are related to each other by some offsets that may be discontinuous (for example the UTC scale with respect to the TAI scale).

Author:

Luc Maisonobe

See Also:

AbsoluteDate

Method Summary

Modifier and Type	Method and Description
double	getLeap(AbsoluteDate date) Get the value of the previous leap.
String	getName() Get the name time scale.
boolean	insideLeap(AbsoluteDate date) Check if date is within a leap second introduction in this time scale.
double	offsetFromTAI(AbsoluteDate date) Get the offset to convert locations from TAIScale to instance.
double	offsetToTAI(DateComponents date, TimeComponents time) Get the offset to convert locations from instance to TAIScale.

Method Detail

offsetFromTAI

double offsetFromTAI(AbsoluteDate date)

Get the offset to convert locations from TAIScale to instance.

Parameters:

date - conversion date

Returns:

offset in seconds to add to a location in TAIScale time scale to get a location in instance time scale

See Also:

offsetToTAI(DateComponents, TimeComponents)

offsetToTAI

double offsetToTAI(DateComponents date,
                   TimeComponents time)

Get the offset to convert locations from instance to TAIScale.

Parameters:

date - date location in the time scale

time - time location in the time scale

Returns:

offset in seconds to add to a location in instance time scale to get a location in TAIScale time scale

See Also:

offsetFromTAI(AbsoluteDate)

insideLeap

boolean insideLeap(AbsoluteDate date)

Check if date is within a leap second introduction in this time scale.

This method will return false for all time scales that do not implement leap seconds, even if the date corresponds to a leap second in UTC scale.

Parameters:

date - date to check

Returns:

true if time is within a leap second introduction

getLeap

double getLeap(AbsoluteDate date)

Get the value of the previous leap.

This method will return 0.0 for all time scales that do not implement leap seconds.

Parameters:

date - date to check

Returns:

value of the previous leap

getName

String getName()

Get the name time scale.

Returns:

name of the time scale