A utility object for tracking an entity with the camera.
    
| Name | Type | Default | Description | 
|---|---|---|---|
entity | 
            
            Entity | The entity to track with the camera. | |
scene | 
            
            Scene | The scene to use. | |
ellipsoid | 
            
            Ellipsoid | 
                
                    Ellipsoid.WGS84
                
                 | 
            
            optional The ellipsoid to use for orienting the camera. | 
Members
static Cesium.EntityView.defaultOffset3D : Cartesian3
    Gets or sets a camera offset that will be used to
initialize subsequent EntityViews.
boundingSphere : BoundingSphere
    The bounding sphere of the object.
ellipsoid : Ellipsoid
    The ellipsoid to use for orienting the camera.
entity : Entity
    The entity to track with the camera.
scene : Scene
    The scene in which to track the object.
Methods
    Should be called each animation frame to update the camera
to the latest settings.
    
| Name | Type | Description | 
|---|---|---|
time | 
            
            JulianDate | The current animation time. | 
boundingSphere | 
            
            BoundingSphere | optional bounding sphere of the object. | 
