A
Property 这是由一个定义的 which is defined by a TimeIntervalCollection，其中每个的数据属性 , where the data property of each TimeInterval 代表某时刻的值。 represents the value at time.
示例： Example:
//Create a Cartesian2 interval property which contains data on August 1st, 2012
//and uses a different value every 6 hours.
const composite = new Cesium.TimeIntervalCollectionProperty();
composite.intervals.addInterval(Cesium.TimeInterval.fromIso8601({
iso8601 : '2012-08-01T00:00:00.00Z/2012-08-01T06:00:00.00Z',
isStartIncluded : true,
isStopIncluded : false,
data : new Cesium.Cartesian2(2.0, 3.4)
}));
composite.intervals.addInterval(Cesium.TimeInterval.fromIso8601({
iso8601 : '2012-08-01T06:00:00.00Z/2012-08-01T12:00:00.00Z',
isStartIncluded : true,
isStopIncluded : false,
data : new Cesium.Cartesian2(12.0, 2.7)
}));
composite.intervals.addInterval(Cesium.TimeInterval.fromIso8601({
iso8601 : '2012-08-01T12:00:00.00Z/2012-08-01T18:00:00.00Z',
isStartIncluded : true,
isStopIncluded : false,
data : new Cesium.Cartesian2(5.0, 12.4)
}));
composite.intervals.addInterval(Cesium.TimeInterval.fromIso8601({
iso8601 : '2012-08-01T18:00:00.00Z/2012-08-02T00:00:00.00Z',
isStartIncluded : true,
isStopIncluded : true,
data : new Cesium.Cartesian2(85.0, 4.1)
}));成员 Members
readonly definitionChanged : Event
获取每当此属性的定义更改时引发的事件。每当使用与当前值不同的数据调用 setValue 时，定义都会更改。 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.
readonly intervals : TimeIntervalCollection
获取区间集合。 Gets the interval collection.
获取一个值，该值指示该属性是否为常量。如果 getValue 始终为当前定义返回相同的结果，则属性被视为常量。 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.
方法 Methods
将此属性与提供的属性进行比较并返回 Compares this property to the provided property and returns
true 如果它们相等， if they are equal, false otherwise.
| 名称 Name | 类型 Type | 说明 Description |
|---|---|---|
other |
Property | 可选 optional 其他财产。 The other property. |
返回： Returns:
true 如果左和右相等， if left and right are equal, false otherwise.
获取指定时间的属性值。 Gets the value of the property at the provided time.
| 名称 Name | 类型 Type | 默认值 Default | 说明 Description |
|---|---|---|---|
time |
JulianDate |
JulianDate.now()
|
可选 optional 检索值的时间。如果省略，则使用当前系统时间。 The time for which to retrieve the value. If omitted, the current system time is used. |
result |
object | 可选 optional 用于存储值的对象，如果省略，则会创建并返回一个新实例。 The object to store the value into, if omitted, a new instance is created and returned. |
返回： Returns:
修改后的结果参数或新实例（如果未提供结果参数）。 The modified result parameter or a new instance if the result parameter was not supplied.