KBE3D / KBCore / Cesium / GeoJsonDataSource

类: GeoJsonDataSource

A DataSource which processes both GeoJSON

and TopoJSON

data. simplestyle-spec

properties will also be used if they are present.

示例

const viewer = new Cesium.Viewer('cesiumContainer');
viewer.dataSources.add(Cesium.GeoJsonDataSource.load('../../SampleData/ne_10m_us_states.topojson', {
  stroke: Cesium.Color.HOTPINK,
  fill: Cesium.Color.PINK,
  strokeWidth: 3,
  markerSymbol: '?'
}));

参数

The name of this data source. If undefined, a name will be taken from the name of the GeoJSON file.

属性

markerSize

static markerSize: number

Gets or sets the default size of the map pin created for each point, in pixels.

---

markerSymbol

static markerSymbol: string

Gets or sets the default symbol of the map pin created for each point. This can be any valid Maki

identifier, any single character, or blank if no symbol is to be used.

---

markerColor

static markerColor: Color

Gets or sets the default color of the map pin created for each point.

---

stroke

static stroke: Color

Gets or sets the default color of polylines and polygon outlines.

---

strokeWidth

static strokeWidth: number

Gets or sets the default width of polylines and polygon outlines.

---

fill

static fill: Color

Gets or sets default color for polygon interiors.

---

clampToGround

static clampToGround: boolean

Gets or sets default of whether to clamp to the ground.

---

crsNames

static crsNames: any

Gets an object that maps the name of a crs to a callback function which takes a GeoJSON coordinate and transforms it into a WGS84 Earth-fixed Cartesian. Older versions of GeoJSON which supported the EPSG type can be added to this list as well, by specifying the complete EPSG name, for example 'EPSG:4326'.

---

crsLinkHrefs

static crsLinkHrefs: any

Gets an object that maps the href property of a crs link to a callback function which takes the crs properties object and returns a Promise that resolves to a function that takes a GeoJSON coordinate and transforms it into a WGS84 Earth-fixed Cartesian. Items in this object take precedence over those defined in <code>crsLinkHrefs</code>, assuming the link has a type specified.

---

crsLinkTypes

static crsLinkTypes: any

Gets an object that maps the type property of a crs link to a callback function which takes the crs properties object and returns a Promise that resolves to a function that takes a GeoJSON coordinate and transforms it into a WGS84 Earth-fixed Cartesian. Items in <code>crsLinkHrefs</code> take precedence over this object.

---

name

name: string

Gets or sets a human-readable name for this instance.

---

clock

clock: DataSourceClock

This DataSource only defines static data, therefore this property is always undefined.

---

entities

entities: EntityCollection

Gets the collection of Entity instances.

---

isLoading

isLoading: boolean

Gets a value indicating if the data source is currently loading data.

---

changedEvent

changedEvent: Event

Gets an event that will be raised when the underlying data changes.

---

errorEvent

errorEvent: Event

Gets an event that will be raised if an error is encountered during processing.

---

loadingEvent

loadingEvent: Event

Gets an event that will be raised when the data source either starts or stops loading.

---

show

show: boolean

Gets whether or not this data source should be displayed.

---

clustering

clustering: EntityCluster

Gets or sets the clustering options for this data source. This object can be shared between multiple data sources.

---

credit

credit: Credit

Gets the credit that will be displayed for the data source

方法

load()

static load(data: any, options?: LoadOptions): Promise<GeoJsonDataSource>

Creates a Promise to a new instance loaded with the provided GeoJSON or TopoJSON data.

参数

data

any

A url, GeoJSON object, or TopoJSON object to be loaded.

options?

LoadOptions

An object specifying configuration options

返回

Promise<GeoJsonDataSource>

A promise that will resolve when the data is loaded.

---

load()

load(data: any, options?: LoadOptions): Promise<GeoJsonDataSource>

Asynchronously loads the provided GeoJSON or TopoJSON data, replacing any existing data.

参数

data

any

A url, GeoJSON object, or TopoJSON object to be loaded.

options?

LoadOptions

An object specifying configuration options

返回

Promise<GeoJsonDataSource>

a promise that will resolve when the GeoJSON is loaded.

---

process()

process(data: any, options?: LoadOptions): Promise<GeoJsonDataSource>

Asynchronously loads the provided GeoJSON or TopoJSON data, without replacing any existing data.

参数

data

any

A url, GeoJSON object, or TopoJSON object to be loaded.

options?

LoadOptions

An object specifying configuration options

返回

Promise<GeoJsonDataSource>

a promise that will resolve when the GeoJSON is loaded.

---

update()

update(time: JulianDate): boolean

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

time

JulianDate

The simulation time.

返回

boolean

True if this data source is ready to be displayed at the provided time, false otherwise.

构造函数

构造函数

new GeoJsonDataSource(name?: string): GeoJsonDataSource

参数

name?

string

返回

GeoJsonDataSource