Package 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 Details

    • 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 Details

    • 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