Package org.orekit.propagation.sampling

Interface OrekitStepInterpolator

All Superinterfaces:
PVCoordinatesProvider
public interface OrekitStepInterpolator extends PVCoordinatesProvider
This interface is a space-dynamics aware step interpolator.

It mirrors the ODEStateInterpolator interface from Hipparchus but provides a space-dynamics interface to the methods.

Author:
Luc Maisonobe

  • Method Details

    • getPreviousState

      SpacecraftState getPreviousState()
      Get the state at previous grid point date.
      Returns:
      state at previous grid point date

    • isPreviousStateInterpolated

      boolean isPreviousStateInterpolated()
      Determines if the previous state is computed directly by the integrator, or if it is calculated using interpolation.

      Typically the previous state is directly computed by the integrator, but when events are detected the steps are shortened so that events occur on step boundaries which means the previous state may be computed by the interpolator.

      Returns:
      true if the previous state was calculated by the interpolator and false if it was computed directly by the integrator.

    • getCurrentState

      SpacecraftState getCurrentState()
      Get the state at current grid point date.
      Returns:
      state at current grid point date

    • isCurrentStateInterpolated

      boolean isCurrentStateInterpolated()
      Determines if the current state is computed directly by the integrator, or if it is calculated using interpolation.

      Typically the current state is directly computed by the integrator, but when events are detected the steps are shortened so that events occur on step boundaries which means the current state may be computed by the interpolator.

      Returns:
      true if the current state was calculated by the interpolator and false if it was computed directly by the integrator.

    • getInterpolatedState

      SpacecraftState getInterpolatedState(AbsoluteDate date)
      Get the state at interpolated date.
      Parameters:
      date - date of the interpolated state
      Returns:
      state at interpolated date

    • isForward

      boolean isForward()
      Check is integration direction is forward in date.
      Returns:
      true if integration is forward in date

    • restrictStep

      OrekitStepInterpolator restrictStep(SpacecraftState newPreviousState, SpacecraftState newCurrentState)
      Create a new restricted version of the instance.

      The instance is not changed at all.

      Parameters:
      newPreviousState - start of the restricted step
      newCurrentState - end of the restricted step
      Returns:
      restricted version of the instance
      Since:
      9.0
      See Also:

    • getPVCoordinates

      default TimeStampedPVCoordinates getPVCoordinates(AbsoluteDate date, Frame frame)
      Get the PVCoordinates of the body in the selected frame.
      Specified by:
      getPVCoordinates in interface PVCoordinatesProvider
      Parameters:
      date - current date
      frame - the frame where to define the position
      Returns:
      time-stamped position/velocity of the body (m and m/s)
      Since:
      12.0