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	'''Code example:''' [[EventUsingEventDetector\|Event using EventDetector interface]]		'''Code example:''' [[EventUsingEventDetector\|Event using EventDetector interface]]

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== What is an Event ? ==

An [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/propagation/events/EventDetector.html EventDetector] corresponds to an object that will allow to a propagator to determine when this event will occurred.

'''PATRIUS''' will already propose a great amount of predefined events (anomaly, AOL, altitude, eclipse, ...). These events may be called with "by default" values or may be customized by defining:
* its maximum check interval (in seconds)
* the threshold value below which the convergence is acquired (in seconds)
* the fact that the event will be checked several time or not.

The following code example shows how to define an AOL detector with all these possibilities.

'''Code example:''' [[AOLEvent|AOL event detector]]

== Using AbstractDetector class ==

If you have not found a predefined event detector into the '''PATRIUS''' list, you can build yourself you own detector using the [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/propagation/events/AbstractDetector.html AbstractDetector] class.

In such a case, you will have to redefined:
* eventOccurred() method ; when the event has occured, this method will be called by the propagator and will return the appropriate action
* g() method ; this method will return a double value which trigger the event when it will reach zero (+/- the threshold)
* shouldBeRemoved() method

'''Code example:''' [[EventUsingAbstractDetector|Event using AbstractDetector class]]

== Using EventDetector interface ==

if you want to customize deeper your event detector, rather than to use AbstractDetector class, you may use EventDetector interface.

In such a case, you will have to redefined:
* eventOccurred() method ; when the event has occured, this method will be called by the propagator and will return the appropriate action
* getMaxCheckInterval() method ; this method will return a double value which trigger the event when it will reach zero (+/- the threshold)
* getMaxIterationCount() method
* getSlopeSelection() method
* getThreshold() method
* init() method
* resetState() method
* shouldBeRemoved() method

'''Code example:''' [[EventUsingEventDetector|Event using EventDetector interface]]

Tutorials 4.0 Events - Historique des versions

Admin : Admin a déplacé la page EventsTutorials vers Tutorials 4.0 Events sans laisser de redirection

Admin le 14 mars 2018 à 12:48

Admin le 15 février 2018 à 12:47

Admin : Page créée avec « == What is an Event ? == An [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/propagation/events/EventDetector.html EventDetector] corresponds to an object that will allow t... »

Admin : Admin a déplacé la page EventsTutorials vers Tutorials 4.0 Events sans laisser de redirection

Admin : Page créée avec « == What is an Event ? == An [{{PathCurrentJavaDoc}}/fr/cnes/sirius/patrius/propagation/events/EventDetector.html EventDetector] corresponds to an object that will allow t... »