org.orekit.time

Class FixedStepSelector

java.lang.Object

org.orekit.time.FixedStepSelector

All Implemented Interfaces:

DatesSelector

public class FixedStepSelector
extends Object
implements DatesSelector

Selector generating a continuous stream of dates separated by a constant step.

The dates can be aligned to whole steps in some time scale. So for example if a step of 60s is used and the alignment time scale is set to UTC, dates will be selected at whole minutes in UTC time.

BEWARE! This class stores internally the last selected dates, so it is neither reusable across several fixed step or continuous schedulers, nor thread-safe. A separate selector should be used for each scheduler and for each thread in multi-threading context.

Since:

9.3

Author:

Luc Maisonobe

Constructor Summary

Constructors

Constructor and Description
FixedStepSelector(double step, TimeScale alignmentTimeScale) Simple constructor.

Method Summary

Modifier and Type	Method and Description
List<AbsoluteDate>	selectDates(AbsoluteDate start, AbsoluteDate end) Select dates within an interval.

Methods inherited from class java.lang.Object

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

Constructor Detail

FixedStepSelector

public FixedStepSelector(double step,
                         TimeScale alignmentTimeScale)

Simple constructor.

Parameters:

step - step between two consecutive dates (s)

alignmentTimeScale - alignment time scale (null is alignment is not needed)

Method Detail

selectDates

public List<AbsoluteDate> selectDates(AbsoluteDate start,
                                      AbsoluteDate end)

Select dates within an interval.

The start and end date may be either in direct or reverse chronological order. The list is produced in the same order as start and end, i.e. direct chronological order if start is earlier than end or reverse chronological order if start is later than end.

The ordering (direct or reverse chronological order) should not be changed between calls, otherwise unpredictable results may occur.

Specified by:

selectDates in interface DatesSelector

Parameters:

start - interval start

end - interval end

Returns:

selected dates within this interval