Package org.orekit.propagation.events.handlers

Class FieldRecallLastOccurrence<T extends CalculusFieldElement<T>>

java.lang.Object

org.orekit.propagation.events.handlers.FieldRecallLastOccurrence<T>

Type Parameters:

T - field type

All Implemented Interfaces:

FieldEventHandler<T>, FieldEventHandlerModifier<T>

public class FieldRecallLastOccurrence<T extends CalculusFieldElement<T>>
extends Object
implements FieldEventHandlerModifier<T>

Event handler wrapping another, arbitrary one whilst remembering date of last detection. If never used, the cache is null. If used but nothing detected, it returns past infinity in case of forward propagation and future infinity otherwise.

Since:

12.1

Author:

Romain Serra

See Also:

• RecallLastOccurrence

Constructor Summary

Constructors

Constructor	Description
FieldRecallLastOccurrence(FieldEventHandler<T> wrappedHandler)	Constructor.

Method Summary

Modifier and Type	Method	Description
Action	eventOccurred(FieldSpacecraftState<T> s, FieldEventDetector<T> detector, boolean increasing)	Handle an event.
FieldAbsoluteDate<T>	getLastOccurrence()	Getter for last occurrence.
FieldEventHandler<T>	getOriginalHandler()	Getter for the original event handler.
void	init(FieldSpacecraftState<T> initialState, FieldAbsoluteDate<T> target, FieldEventDetector<T> detector)	Initialize event handler at the start of a propagation.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.propagation.events.handlers.FieldEventHandlerModifier

finish, resetState

Constructor Details

FieldRecallLastOccurrence

public FieldRecallLastOccurrence(FieldEventHandler<T> wrappedHandler)

Constructor.

Parameters:

wrappedHandler - event handler to wrap

Method Details

getOriginalHandler

public FieldEventHandler<T> getOriginalHandler()

Description copied from interface: FieldEventHandlerModifier

Getter for the original event handler.

Specified by:

getOriginalHandler in interface FieldEventHandlerModifier<T extends CalculusFieldElement<T>>

Returns:

underlying handler

getLastOccurrence

public FieldAbsoluteDate<T> getLastOccurrence()

Getter for last occurrence.

Returns:

last date when underlying event was detected

init

public void init(FieldSpacecraftState<T> initialState,
 FieldAbsoluteDate<T> target,
 FieldEventDetector<T> detector)

Initialize event handler at the start of a propagation.

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

The default implementation does nothing

Specified by:

init in interface FieldEventHandler<T extends CalculusFieldElement<T>>

Specified by:

init in interface FieldEventHandlerModifier<T extends CalculusFieldElement<T>>

Parameters:

initialState - initial state

target - target date for the propagation

detector - event detector related to the event handler

eventOccurred

public Action eventOccurred(FieldSpacecraftState<T> s,
 FieldEventDetector<T> detector,
 boolean increasing)

Handle an event.

Specified by:

eventOccurred in interface FieldEventHandler<T extends CalculusFieldElement<T>>

Specified by:

eventOccurred in interface FieldEventHandlerModifier<T extends CalculusFieldElement<T>>

Parameters:

s - SpaceCraft state to be used in the evaluation

detector - object with appropriate type that can be used in determining correct return state

increasing - with the event occurred in an "increasing" or "decreasing" slope direction

Returns:

the Action that the calling detector should pass back to the evaluation system