# BillboardVisualizer

#### new Cesium.BillboardVisualizer(entityCluster, entityCollection)
DataSources/BillboardVisualizer.js 71

  A `Visualizer` which maps `Entity#billboard` to a `Billboard`.

  Name | Type | Description
  --- | --- | ---
  `entityCluster` | EntityCluster | The entity cluster to manage the collection of billboards and optionally cluster with other entities.
  `entityCollection` | EntityCollection | The entityCollection to visualize.

### Methods

#### destroy()
DataSources/BillboardVisualizer.js 219

  Removes and destroys all primitives created by this instance.

#### isDestroyed() → Boolean
DataSources/BillboardVisualizer.js 212

  Returns true if this object was destroyed; otherwise, false.

  ##### Returns:

  True if this object was destroyed; otherwise, false.

#### update(time) → Boolean
DataSources/BillboardVisualizer.js 96

  Updates the primitives created by this visualizer to match their Entity counterpart at the given time.

  Name | Type | Description
  --- | --- | ---
  `time` | JulianDate | The time to update to.

  ##### Returns:

  This function always returns true.