EntityCluster

new Cesium.EntityCluster(options)
DataSources/EntityCluster.js 55

Defines how screen space objects (billboards, points, labels) are clustered.
Name Type Description
options Object optional An object with the following properties:
Name Type Default Description
enabled Boolean false optional Whether or not to enable clustering.
pixelRange Number 80 optional The pixel range to extend the screen space bounding box.
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.
Demo:

Members

clusterBillboards : Boolean
DataSources/EntityCluster.js 481

Gets or sets whether clustering billboard entities is enabled.

clusterEvent : Event
DataSources/EntityCluster.js 471

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
DataSources/EntityCluster.js 495

Gets or sets whether clustering labels entities is enabled.

clusterPoints : Boolean
DataSources/EntityCluster.js 509

Gets or sets whether clustering point entities is enabled.

enabled : Boolean
DataSources/EntityCluster.js 429

Gets or sets whether clustering is enabled.

minimumClusterSize : Number
DataSources/EntityCluster.js 457

Gets or sets the minimum number of screen space objects that can be clustered.

pixelRange : Number
DataSources/EntityCluster.js 443

Gets or sets the pixel range to extend the screen space bounding box.

Methods

destroy() → undefined
DataSources/EntityCluster.js 786

Destroys the WebGL resources held by this object. Destroying an object allows for deterministic release of WebGL resources, instead of relying on the garbage collector to destroy this object.

Unlike other objects that use WebGL resources, this object can be reused. For example, if a data source is removed from a data source collection and added to another.

Returns:

Type Definitions

newClusterCallback(clusteredEntities, cluster)
DataSources/EntityCluster.js 824

A event listener function used to style clusters.
Name Type Description
clusteredEntities Array.<Entity> An array of the entities contained in the cluster.
cluster Object An object containing billboard, label, and point properties. The values are the same as billboard, label and point entities, but must be the values of the ConstantProperty.
Example:
// The default cluster values.
dataSource.clustering.clusterEvent.addEventListener(function(entities, cluster) {
    cluster.label.show = true;
    cluster.label.text = entities.length.toLocaleString();
});