CallbackPositionProperty
external class CallbackPositionProperty(callback: CallbackPositionProperty, val isConstant: Boolean, var referenceFrame: ReferenceFrame = definedExternally)(source)
A PositionProperty whose value is lazily evaluated by a callback function.
Parameters
callback
The function to be called when the position property is evaluated.
See also
Constructors
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constructor(callback: CallbackPositionProperty, isConstant: Boolean, referenceFrame: ReferenceFrame = definedExternally)
Properties
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Gets the event that is raised whenever the definition of this property changes. The definition is considered to have changed if a call to getValue would return a different result for the same time.
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true when the callback function returns the same value every time, false if the value will change.
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The reference frame in which the position is defined. Default value - ReferenceFrame.FIXED
Functions
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fun getValue(time: JulianDate? = definedExternally, result: Cartesian3? = definedExternally): Cartesian3?
Gets the value of the property at the provided time in the fixed frame.
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fun getValueInReferenceFrame(time: JulianDate, referenceFrame: ReferenceFrame, result: Cartesian3? = definedExternally): Cartesian3?
Gets the value of the property at the provided time and in the provided reference frame.
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Sets the callback to be used.