org.orekit.propagation.sampling

Class FieldOrekitStepNormalizer<T extends RealFieldElement<T>>

java.lang.Object

org.orekit.propagation.sampling.FieldOrekitStepNormalizer<T>

All Implemented Interfaces:

FieldOrekitStepHandler<T>

public class FieldOrekitStepNormalizer<T extends RealFieldElement<T>>
extends Object
implements FieldOrekitStepHandler<T>

This class wraps an object implementing OrekitFixedStepHandler into a OrekitStepHandler.

It mirrors the StepNormalizer interface from commons-math but provides a space-dynamics interface to the methods.

Author:

Luc Maisonobe

Constructor Summary

Constructors

Constructor and Description
FieldOrekitStepNormalizer(T h, FieldOrekitFixedStepHandler<T> handler) Simple constructor.

Method Summary

Modifier and Type	Method and Description
void	handleStep(FieldOrekitStepInterpolator<T> interpolator, boolean isLast) Handle the last accepted step.
void	init(FieldSpacecraftState<T> s0, FieldAbsoluteDate<T> t) Initialize step handler at the start of a propagation.
boolean	requiresDenseOutput() Determines whether this handler needs dense output.

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldOrekitStepNormalizer

public FieldOrekitStepNormalizer(T h,
                                 FieldOrekitFixedStepHandler<T> handler)

Simple constructor.

Parameters:

h - fixed time step (sign is not used)

handler - fixed time step handler to wrap

Method Detail

requiresDenseOutput

public boolean requiresDenseOutput()

Determines whether this handler needs dense output. This handler needs dense output in order to provide data at regularly spaced steps regardless of the steps the propagator uses, so this method always returns true.

Returns:

always true

init

public void init(FieldSpacecraftState<T> s0,
                 FieldAbsoluteDate<T> t)
          throws OrekitException

Initialize step handler at the start of a propagation.

This method is called once at the start of the propagation. It may be used by the step handler to initialize some internal data if needed.

Specified by:

init in interface FieldOrekitStepHandler<T extends RealFieldElement<T>>

Parameters:

s0 - initial state

t - target time for the integration

Throws:

OrekitException - if step handler cannot be initialized

handleStep

public void handleStep(FieldOrekitStepInterpolator<T> interpolator,
                       boolean isLast)
                throws OrekitException

Handle the last accepted step.

Specified by:

handleStep in interface FieldOrekitStepHandler<T extends RealFieldElement<T>>

Parameters:

interpolator - interpolator for the last accepted step. For efficiency purposes, the various propagators 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 propagation a continuous model valid throughout the propagation range), it should build a local copy using the clone method and store this copy.

isLast - true if the step is the last one

Throws:

OrekitException - this exception is propagated to the caller if the underlying user function triggers one