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	== What is an Event ? ==		== 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.		An [{{JavaDoc4.1}}/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.

	<font color=#556B2F>'''PATRIUS'''</font> will already propose a great amount of predefined events (anomaly, <font color=#FF8C00 title="Argument Of Latitude">AOL</font>, altitude, eclipse, ...). These events may be called with "by default" values or may be customized by defining:		<font color=#556B2F>'''PATRIUS'''</font> will already propose a great amount of predefined events (anomaly, <font color=#FF8C00 title="Argument Of Latitude">AOL</font>, altitude, eclipse, ...). These events may be called with "by default" values or may be customized by defining:
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	The following code example shows how to define an <font color=#FF8C00 title="Argument Of Latitude">AOL</font> detector with all these possibilities.		The following code example shows how to define an <font color=#FF8C00 title="Argument Of Latitude">AOL</font> detector with all these possibilities.

	'''Code example:''' [[~~AOLEvent~~\|AOL event detector]]		'''Code example:''' [[AOLEvent_4.1\|AOL event detector]]

	== Using AbstractDetector class ==		== Using AbstractDetector class ==

	If you have not found a predefined event detector into the <font color=#556B2F>'''PATRIUS'''</font> list, you can build yourself you own detector using the [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/propagation/events/AbstractDetector.html AbstractDetector] class.		If you have not found a predefined event detector into the <font color=#556B2F>'''PATRIUS'''</font> list, you can build yourself you own detector using the [{{JavaDoc4.1}}/fr/cnes/sirius/patrius/propagation/events/AbstractDetector.html AbstractDetector] class.

	In such a case, you will have to redefined:		In such a case, you will have to redefined:
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	* <font color=#4169E1>shouldBeRemoved()</font> method		* <font color=#4169E1>shouldBeRemoved()</font> method

	'''Code example:''' [[~~EventUsingAbstractDetector~~\|Event using AbstractDetector class]]		'''Code example:''' [[EventUsingAbstractDetector_4.1\|Event using AbstractDetector class]]

	== Using EventDetector interface ==		== Using EventDetector interface ==
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	* <font color=#4169E1>shouldBeRemoved()</font> method		* <font color=#4169E1>shouldBeRemoved()</font> method

	'''Code example:''' [[~~EventUsingEventDetector~~\|Event using EventDetector interface]]		'''Code example:''' [[EventUsingEventDetector_4.1\|Event using EventDetector interface]]

	[[Category:Tutorials 4.1]]		[[Category:Tutorials 4.1]]

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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]]

[[Category:Tutorials 4.1]]

Tutorials 4.1 Events - Historique des versions

Admin le 20 décembre 2018 à 15:39

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 : 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... »