kotlin-cesium-engine/cesium.engine/ImageryLayerCollection

ImageryLayerCollection

external class ImageryLayerCollection(source)

An ordered collection of imagery layers.

Constructors

constructor()

Properties

layerAdded

var layerAdded: DefaultEvent

An event that is raised when a layer is added to the collection. Event handlers are passed the layer that was added and the index at which it was added.

layerMoved

var layerMoved: DefaultEvent

An event that is raised when a layer changes position in the collection. Event handlers are passed the layer that was moved, its new index after the move, and its old index prior to the move.

layerRemoved

var layerRemoved: DefaultEvent

An event that is raised when a layer is removed from the collection. Event handlers are passed the layer that was removed and the index from which it was removed.

layerShownOrHidden

var layerShownOrHidden: DefaultEvent

An event that is raised when a layer is shown or hidden by setting the ImageryLayer.show property. Event handlers are passed a reference to this layer, the index of the layer in the collection, and a flag that is true if the layer is now shown or false if it is now hidden.

length

var length: Int

Gets the number of layers in this collection.

Functions

add

fun add(layer: ImageryLayer, index: Int? = definedExternally)

Adds a layer to the collection.

addImageryProvider

fun addImageryProvider(imageryProvider: ImageryProvider, index: Int? = definedExternally): ImageryLayer

Creates a new layer using the given ImageryProvider and adds it to the collection.

contains

fun contains(layer: ImageryLayer): Boolean

Checks to see if the collection contains a given layer.

destroy

fun destroy()

Destroys the WebGL resources held by all layers in this collection. Explicitly destroying this object allows for deterministic release of WebGL resources, instead of relying on the garbage collector.

get

operator fun get(index: Int): ImageryLayer

Gets a layer by index from the collection.

indexOf

fun indexOf(layer: ImageryLayer): Int

Determines the index of a given layer in the collection.

isDestroyed

fun isDestroyed(): Boolean

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

lower

fun lower(layer: ImageryLayer)

Lowers a layer down one position in the collection.

lowerToBottom

fun lowerToBottom(layer: ImageryLayer)

Lowers a layer to the bottom of the collection.

pickImageryLayerFeatures

suspend fun pickImageryLayerFeatures(ray: Ray, scene: Scene): ReadonlyArray<ImageryLayerFeatureInfo>?

Asynchronously determines the imagery layer features that are intersected by a pick ray. The intersected imagery layer features are found by invoking ImageryProvider.pickFeatures for each imagery layer tile intersected by the pick ray. To compute a pick ray from a location on the screen, use Camera.getPickRay.