KBE3D / KBCore / Cesium / CallbackPositionProperty

类: CallbackPositionProperty

A PositionProperty whose value is lazily evaluated by a callback function.

参数

The function to be called when the position property is evaluated.

参数

<code>true</code> when the callback function returns the same value every time, <code>false</code> if the value will change.

参数

The reference frame in which the position is defined.

属性

isConstant

readonly isConstant: boolean

Gets a value indicating if this property is constant.

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definitionChanged

readonly definitionChanged: Event

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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referenceFrame

referenceFrame: ReferenceFrame

Gets the reference frame in which the position is defined.

方法

getValue()

getValue(time?: JulianDate, result?: Cartesian3): Cartesian3 | undefined

Gets the value of the property at the provided time in the fixed frame.

参数

time?

JulianDate

The time for which to retrieve the value. If omitted, the current system time is used.

result?

Cartesian3

The object to store the value into, if omitted, a new instance is created and returned.

返回

Cartesian3 | undefined

The modified result parameter or a new instance if the result parameter was not supplied.

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setCallback()

setCallback(callback: Callback, isConstant: boolean): void

Sets the callback to be used.

参数

callback

Callback

The function to be called when the property is evaluated.

isConstant

boolean

<code>true</code> when the callback function returns the same value every time, <code>false</code> if the value will change.

返回

void

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getValueInReferenceFrame()

getValueInReferenceFrame(time: JulianDate, referenceFrame: ReferenceFrame, result?: Cartesian3): Cartesian3 | undefined

Gets the value of the property at the provided time and in the provided reference frame.

参数

time

JulianDate

The time for which to retrieve the value.

referenceFrame

ReferenceFrame

The desired referenceFrame of the result.

result?

Cartesian3

The object to store the value into, if omitted, a new instance is created and returned.

返回

Cartesian3 | undefined

The modified result parameter or a new instance if the result parameter was not supplied.

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equals()

equals(other?: Property): boolean

Compares this property to the provided property and returns <code>true</code> if they are equal, <code>false</code> otherwise.

参数

other?

Property

The other property.

返回

boolean

true if left and right are equal, false otherwise.

构造函数

构造函数

new CallbackPositionProperty(callback: Callback, isConstant: boolean, referenceFrame?: ReferenceFrame): CallbackPositionProperty

参数

callback

Callback

isConstant

boolean

referenceFrame?

ReferenceFrame

返回

CallbackPositionProperty