A
DataSource which processes CZML.
| 参数名称 | 类型 | 描述信息 |
|---|---|---|
name |
string | 可选 An optional name for the data source. This value will be overwritten if a loaded document contains a name. |
成员(属性)
static Cesium.CzmlDataSource.updaters : Array.<CzmlDataSource.UpdaterFunction>
Gets the array of CZML processing functions.
changedEvent : Event
Gets an event that will be raised when the underlying data changes.
Gets the clock settings defined by the loaded CZML. If no clock is explicitly
defined in the CZML, the combined availability of all objects is returned. If
only static data exists, this value is undefined.
Gets or sets the clustering options for this data source. This object can be shared between multiple data sources.
Gets the credit that will be displayed for the data source
Gets the collection of
Entity instances.
errorEvent : Event
Gets an event that will be raised if an error is encountered during processing.
Gets a value indicating if the data source is currently loading data.
loadingEvent : Event
Gets an event that will be raised when the data source either starts or stops loading.
Gets a human-readable name for this instance.
Gets whether or not this data source should be displayed.
方法
static Cesium.CzmlDataSource.load(czml, options) → Promise.<CzmlDataSource>
Creates a Promise to a new instance loaded with the provided CZML data.
| 参数名称 | 类型 | 描述信息 |
|---|---|---|
czml |
Resource | string | object | A url or CZML object to be processed. |
options |
CzmlDataSource.LoadOptions | 可选 An object specifying configuration options |
返回值:
A promise that resolves to the new instance once the data is processed.
static Cesium.CzmlDataSource.processMaterialPacketData(object, propertyName, packetData, interval, sourceUri, entityCollection)
A helper function used by custom CZML updater functions
which creates or updates a
MaterialProperty from a CZML packet.
| 参数名称 | 类型 | 描述信息 |
|---|---|---|
object |
object | The object on which the property will be added or updated. |
propertyName |
string | The name of the property on the object. |
packetData |
object | The CZML packet being processed. |
interval |
TimeInterval | A constraining interval for which the data is valid. |
sourceUri |
string | The originating uri of the data being processed. |
entityCollection |
EntityCollection | The collection being processsed. |
static Cesium.CzmlDataSource.processPacketData(type, object, propertyName, packetData, interval, sourceUri, entityCollection)
A helper function used by custom CZML updater functions
which creates or updates a
Property from a CZML packet.
| 参数名称 | 类型 | 描述信息 |
|---|---|---|
type |
function | The constructor function for the property being processed. |
object |
object | The object on which the property will be added or updated. |
propertyName |
string | The name of the property on the object. |
packetData |
object | The CZML packet being processed. |
interval |
TimeInterval | A constraining interval for which the data is valid. |
sourceUri |
string | The originating uri of the data being processed. |
entityCollection |
EntityCollection | The collection being processsed. |
static Cesium.CzmlDataSource.processPositionPacketData(object, propertyName, packetData, interval, sourceUri, entityCollection)
A helper function used by custom CZML updater functions
which creates or updates a
PositionProperty from a CZML packet.
| 参数名称 | 类型 | 描述信息 |
|---|---|---|
object |
object | The object on which the property will be added or updated. |
propertyName |
string | The name of the property on the object. |
packetData |
object | The CZML packet being processed. |
interval |
TimeInterval | A constraining interval for which the data is valid. |
sourceUri |
string | The originating uri of the data being processed. |
entityCollection |
EntityCollection | The collection being processsed. |
load(czml, options) → Promise.<CzmlDataSource>
Loads the provided url or CZML object, replacing any existing data.
| 参数名称 | 类型 | 描述信息 |
|---|---|---|
czml |
Resource | string | object | A url or CZML object to be processed. |
options |
CzmlDataSource.LoadOptions | 可选 An object specifying configuration options |
返回值:
A promise that resolves to this instances once the data is processed.
process(czml, options) → Promise.<CzmlDataSource>
Processes the provided url or CZML object without clearing any existing data.
| 参数名称 | 类型 | 描述信息 |
|---|---|---|
czml |
Resource | string | object | A url or CZML object to be processed. |
options |
CzmlDataSource.LoadOptions | 可选 An object specifying configuration options |
返回值:
A promise that resolves to this instances once the data is processed.
Updates the data source to the provided time. This function is optional and
is not required to be implemented. It is provided for data sources which
retrieve data based on the current animation time or scene state.
If implemented, update will be called by
DataSourceDisplay once a frame.
| 参数名称 | 类型 | 描述信息 |
|---|---|---|
time |
JulianDate | The simulation time. |
返回值:
True if this data source is ready to be displayed at the provided time, false otherwise.
定义的类型
Initialization options for the
load method.
属性:
| 属性名称 | 类型 | 可选 | 描述信息 |
|---|---|---|---|
sourceUri |
Resource | string |
<可选> |
Overrides the url to use for resolving relative links. |
credit |
Credit | string |
<可选> |
A credit for the data source, which is displayed on the canvas. |
| 参数名称 | 类型 | 描述信息 |
|---|---|---|
entity |
Entity | |
packet |
object | |
entityCollection |
EntityCollection | |
sourceUri |
string |