Description
Detects start of visibility (AOS) and end of visibility (LOS) events.
Timing Precision Mode
This page describes functionality in nanosecond timing precision mode.
Click here to see the documentation for this object in millisecond timing precision mode.
Note: This is an interval method. See the Interval Methods page for more information.
Note: This method has a state. See the Methods and Properties with State page for more information.
Method Signature
Arguments
evaluationEpoch
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Description:
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This epoch defines an end-point of the evaluation interval. FreeFlyer will determine whether any events have occurred between this epoch and the previous evaluationEpoch specified for this argument.
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eventTimes
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Description:
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An Array to be filled with the detected event times.
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eventTypes
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Description:
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An Array to be filled with the detected event types.
Event Type == 1 is start of visibility.
Event Type == 2 is end of visibility.
The FF_Preferences.IntervalEventReportingBehavior property controls whether the start of propagation is reported as an event. By default, if visibility starts before the beginning of the propagation span, FreeFlyer will label the start of the propagation as the start of visibility.
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Return Value
Returns the number of detected event.
Syntax
myVariable1 = myVisibilityCalculator1.VisibilityTimes(myTimeSpan1, myTimeSpanArray1, myArray1);
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See also
VisibilityCalculator Object
Coverage and Contact Analysis Guide
Visibility Calculators Guide
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