Interface StepHandler

  • All Known Implementing Classes:
    ContinuousOutputModel, DummyStepHandler, StepNormalizer

    public interface StepHandler
    This interface represents a handler that should be called after each successful step.

    The ODE integrators compute the evolution of the state vector at some grid points that depend on their own internal algorithm. Once they have found a new grid point (possibly after having computed several evaluation of the derivative at intermediate points), they provide it to objects implementing this interface. These objects typically either ignore the intermediate steps and wait for the last one, store the points in an ephemeris, or forward them to specialized processing or output methods.

    See Also:
    FirstOrderIntegrator, SecondOrderIntegrator, StepInterpolator
    • Method Detail

      • reset

        void reset()
        Reset the step handler. Initialize the internal data as required before the first step is handled.
      • handleStep

        void handleStep​(StepInterpolator interpolator,
                        boolean isLast)
                 throws DerivativeException
        Handle the last accepted step
        interpolator - interpolator for the last accepted step. For efficiency purposes, the various integrators reuse the same object on each call, so if the instance wants to keep it across all calls (for example to provide at the end of the integration a continuous model valid throughout the integration range, as the ContinuousOutputModel class does), it should build a local copy using the clone method of the interpolator and store this copy. Keeping only a reference to the interpolator and reusing it will result in unpredictable behavior (potentially crashing the application).
        isLast - true if the step is the last one
        DerivativeException - if user code called from step interpolator finalization triggers one