EntityCluster - CesiumJS API 文档

new Cesium.EntityCluster(options)

定义屏幕空间物体(纸板、点、标签)的组合方式.

Name Type Description

options

object

optional 具有下列属性的天体:

Name	Type	Default	Description
`enabled`	boolean	`false`	optional Whether or not to enable clustering.
`pixelRange`	number	`80`	optional
`minimumClusterSize`	number	`2`	optional The minimum number of screen space objects that can be clustered.
`clusterBillboards`	boolean	`true`	optional Whether or not to cluster the billboards of an entity.
`clusterLabels`	boolean	`true`	optional Whether or not to cluster the labels of an entity.
`clusterPoints`	boolean	`true`	optional Whether or not to cluster the points of an entity.
`show`	boolean	`true`	optional Determines if the entities in the cluster will be shown.

Demo:

Cesium Sandcastle Clustering Demo

Members

clusterBillboards : boolean

获取或设定是否启用集成公告牌实体 .

clusterEvent : Event.<EntityCluster.newClusterCallback>

Gets the event that will be raised when a new cluster will be displayed. The signature of the event listener is EntityCluster.newClusterCallback.

clusterLabels : boolean

获取或设定是否启用集群标签实体 .

clusterPoints : boolean

获取或设定是否启用集群点实体 .

enabled : boolean

获取或设定是否启用集群 .

minimumClusterSize : number

获取或设定可以集群的屏幕空间物体的最小数量.

pixelRange : number

获取或设置像素范围以扩展屏幕空间边框.

show : boolean

确定是否显示此收藏中的实体 .

Default Value: true

Methods

destroy()

Destroys the WebGL resources held by this object. Destroying an object allows for deterministic 释放 WebGL 资源,而不是依赖垃圾收集器来摧毁此对象.

与其他使用 WebGL 资源的对象不同,此对象可以重用. 例如,如果数据源被删除从一个数据源收集并添加到另一个数据源中.

Type Definitions

Cesium.EntityCluster.newClusterCallback(clusteredEntities, cluster)

用于样式集群的事件倾听器函数 .

Name Type Description

clusteredEntities Array.<Entity> 组内包含的一系列实体.

cluster

object

包含 Billboard、标签和点的天体代表这组实体的原始人.

Name	Type	Description
`billboard`	Billboard
`label`	Label
`point`	PointPrimitive

Example:

// The default cluster values.
dataSource.clustering.clusterEvent.addEventListener(function(entities, cluster) {
    cluster.label.show = true;
    cluster.label.text = entities.length.toLocaleString();
});