AirspaceCoverageOperator.ObserverTypeConditions Property
Gets a collection of alternative instances of ObserverTypeCondition.
Syntax
public ObserverTypeConditionCollection ObserverTypeConditions { get; }Property Value
Default: Empty collection.
A collection of alternative instances of ObserverTypeCondition.
Remarks
This collection of conditions offers a way to define the viewshed merging operation in terms of requirements of specific observer types.
If the collection is empty, it will be ignored and only the MinObservers value will be used for calculating the output.
A single condition has a property that is an AttributeSet, where the attribute names represent various observer types, and their values are integers that indicate how many observers of each kind are needed. For example, to declare that a position is sufficiently covered if it can be seen by at least two infrared sensors and at least one radar sensor, you can make a ObserverTypeCondition where the attribute set has an attribute named INFRARED with the value 2 and an attribute named RADAR with the value 1.
Since the conditions in the collection are treated as alternatives, it is possible to express an or-condition. For example, you can declare that a position is sufficiently covered if it can be seen by at least two infrared sensors and at least one radar sensor or if it can be seen by at least one camera.
In order to use this collection of conditions, each observer feature from ObserverInput must have an attribute that determines its type. The name of that attribute is observerType by default but can be modified by setting the ObserverTypeAttribute, and for each observer feature, the value of the attribute should be an Atom representing an observer type like INFRARED or RADAR. The set of possible observer types is open-ended since any atom can be used.
Note that if the condition collection is non-empty and there is some incoming observer feature whose type does not occur in any condition, then the observer cannot contribute to the fulfillment of any condition. In this case the observer will be ignored and a warning will be logged.
Platforms
Windows, Linux, Android