JavaScript ArcGIS BuildingSceneLayer.layerId用法及代码示例

基本信息

以下是所在类或对象的基本信息。

AMD: require(["esri/layers/BuildingSceneLayer"], (BuildingSceneLayer) => { /* code goes here */ });

ESM: import BuildingSceneLayer from "@arcgis/core/layers/BuildingSceneLayer";

类： esri/layers/BuildingSceneLayer

继承: BuildingSceneLayer > Layer > Accessor

自从：用于 JavaScript 4.10 的 ArcGIS API

用法说明

BuildingSceneLayer.layerId函数(或属性)的定义如下：

layerId Number

场景服务图层的图层 ID 或图层索引。当从包含多个图层的服务加载带有 PortalItem 属性的单个图层时，这特别有用。您可以在以下两种情况之一指定此值：

通过 PortalItem 属性加载图层时。
将图层 url 直接指向场景服务时。

如果在上述任一情况下均未指定 layerId，则选择服务中的第一层 (layerId = 0)。

例子：

// while these examples use a SceneLayer, the same pattern can be
// used for other layers that may be loaded from portalItem ids

// loads the third layer in the given Portal Item
let layer = new SceneLayer({
  portalItem: {
    id: "73df987984b24094b848d580eb83b0fb"
  },
  layerId: 2
});

// If not specified, the first layer (layerId: 0) will be returned
let layer = new SceneLayer({
  portalItem: {
    id: "73df987984b24094b848d580eb83b0fb"
  }
});

// Can also be used if URL points to service and not layer
let layer = new SceneLayer({
  url: "https://scenesampleserverdev.arcgis.com/arcgis/rest/services/Hosted/DevA_Trees/SceneServer",
  layerId: 0  // Notice that the url doesn't end with /2
});

// This code returns the same layer as the previous snippet
let layer = new SceneLayer({
  url: "https://scenesampleserverdev.arcgis.com/arcgis/rest/services/Hosted/DevA_Trees/SceneServer/layers/0",
  // The layer id is specified in the URL
});

相关用法

注：本文由纯净天空筛选整理自arcgis.com大神的英文原创作品 BuildingSceneLayer.layerId。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。