Detailed Description

Define a class for doing time system conversions using only a hard-coded table of second-resolution offsets from TAI.

Definition at line 51 of file BasicTimeSystemConverter.hpp.

#include <BasicTimeSystemConverter.hpp>

Inheritance diagram for gnsstk::BasicTimeSystemConverter:

Public Member Functions
bool	explore (TimeSystem fromSys, TimeSystem toSys, const CommonTime &fromTime, const CommonTime &toTime)

bool	getOffset (TimeSystem fromSys, TimeSystem toSys, const CommonTime &t, double &offs) override

Protected Attributes
TimeSystem	fromSystem
	Time system being converted from using toffs. More...

CommonTime	fromTimeStamp
	First time that toffs is known to be valid. More...

double	toffs
	Stored offset for time system conversion. More...

TimeSystem	toSystem
	Time system being converted to using toffs. More...

CommonTime	toTimeStamp
	Final time that toffs is known to be valid. More...

Member Function Documentation

◆ explore()

bool gnsstk::BasicTimeSystemConverter::explore	(	TimeSystem	fromSys,
		TimeSystem	toSys,
		const CommonTime &	fromTime,
		const CommonTime &	toTime
	)

Attempt to "prime" internal data over a desired time range so that when doing a large number of conversions over a time range, if the offset is the same across that time range, we don't do a conversion every single call. If the offset at fromTime is the same as at toTime, any calls to getOffset after calling explore will use the internally stored offset as opposed to attempting to do conversions. This is a performance enhancement and is not strictly necessary.

Parameters

[in]	fromSys	The time system to convert from.
[in]	toSys	The time system to convert to.
[in]	fromTime	The start of the time range of interest.
[in]	toTime	The end of the time range of interest.

Returns: false if unable to determine the offset.

Definition at line 78 of file BasicTimeSystemConverter.cpp.

◆ getOffset()

bool gnsstk::BasicTimeSystemConverter::getOffset	(	TimeSystem	fromSys,
		TimeSystem	toSys,
		const CommonTime &	t,
		double &	offs
	)

overridevirtual

Get the offset in seconds between fromSys and toSys.

Parameters

[in]	fromSys	The time system to convert from.
[in]	toSys	The time system to convert to.
[in]	t	The time at which the offset is being requested (i.e. the time being converted).
[out]	offs	The resulting offset, if available.