A
CompositeProperty which is also a PositionProperty.
| 参数名称 | 类型 | 默认值 | 描述信息 |
|---|---|---|---|
referenceFrame |
ReferenceFrame |
ReferenceFrame.FIXED
|
可选 The reference frame in which the position is defined. |
成员(属性)
readonly definitionChanged : Event
Gets the event that is raised whenever the definition of this property changes.
The definition is changed whenever setValue is called with data different
than the current value.
Gets the interval collection.
Gets a value indicating if this property is constant. A property is considered
constant if getValue always returns the same result for the current definition.
referenceFrame : ReferenceFrame
Gets or sets the reference frame which this position presents itself as.
Each PositionProperty making up this object has it's own reference frame,
so this property merely exposes a "preferred" reference frame for clients
to use.
方法
Compares this property to the provided property and returns
true if they are equal, false otherwise.
| 参数名称 | 类型 | 描述信息 |
|---|---|---|
other |
Property | 可选 The other property. |
返回值:
true if left and right are equal, false otherwise.
getValue(time, result) → Cartesian3|undefined
Gets the value of the property at the provided time in the fixed frame.
| 参数名称 | 类型 | 默认值 | 描述信息 |
|---|---|---|---|
time |
JulianDate |
JulianDate.now()
|
可选 The time for which to retrieve the value. If omitted, the current system time is used. |
result |
Cartesian3 | 可选 The object to store the value into, if omitted, a new instance is created and returned. |
返回值:
The modified result parameter or a new instance if the result parameter was not supplied.
getValueInReferenceFrame(time, referenceFrame, result) → Cartesian3|undefined
Gets the value of the property at the provided time and in the provided reference frame.
| 参数名称 | 类型 | 描述信息 |
|---|---|---|
time |
JulianDate | The time for which to retrieve the value. |
referenceFrame |
ReferenceFrame | The desired referenceFrame of the result. |
result |
Cartesian3 | 可选 The object to store the value into, if omitted, a new instance is created and returned. |
返回值:
The modified result parameter or a new instance if the result parameter was not supplied.