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ArcGIS API for JavaScript 4.X 版本升級後，API發生了很大的變化。其中就支援了WebEarth展示，主要是通過 esri/views/SceneView 實現的。
在新版本中，預設都是載入Esri自己的地圖。
若想載入其他地圖，可以通過擴充BaseTileLayer實現。
例如，最新版本載入高德地圖的demo如下：
[html] view plain copy
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<title>Custom TileLayer - 4.6</title>
<link rel="stylesheet" href="https://js.arcgis.com/4.6/esri/css/main.css">
<style>
html,
body,
#viewDiv {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
}
</style>
<script src="https://js.arcgis.com/4.6/"></script>
<script>
require([
"esri/Map",
"esri/config",
"esri/request",
"esri/Color",
"esri/views/SceneView",
"esri/widgets/LayerList",
"esri/layers/BaseTileLayer",
"dojo/domReady!" ], function( Map, esriConfig, esriRequest, Color, SceneView, LayerList, BaseTileLayer ) { // ******************************************************* // Custom tile layer class code // Create a subclass of BaseTileLayer // ******************************************************* var TintLayer = BaseTileLayer.createSubclass({ properties: { urlTemplate: null, tint: { value: null, type: Color } }, // generate the tile url for a given level, row and column getTileUrl: function(level, row, col) { return this.urlTemplate.replace("{z}", level).replace("{x}", col).replace("{y}", row); }, // This method fetches tiles for the specified level and size. // Override this method to process the data returned from the server. fetchTile: function(level, row, col) { // call getTileUrl() method to construct the URL to tiles // for a given level, row and col provided by the LayerView var url = this.getTileUrl(level, row, col); // request for tiles based on the generated url // set allowImageDataAccess to true to allow // cross-domain access to create WebGL textures for 3D. return esriRequest(url, { responseType: "image", allowImageDataAccess: true }) .then(function(response) { // when esri request resolves successfully // get the image from the response var image = response.data; var width = this.tileInfo.size[0]; var height = this.tileInfo.size[0]; // create a canvas with 2D rendering context var canvas = document.createElement("canvas"); var context = canvas.getContext("2d"); canvas.width = width; canvas.height = height; // Draw the blended image onto the canvas. context.drawImage(image, 0, 0, width, height); return canvas; }.bind(this)); } }); // ******************************************************* // Start of JavaScript application // ******************************************************* // Add stamen url to the list of servers known to support CORS specification. esriConfig.request.corsEnabledServers.push("webst01.is.autonavi.com"); // Create a new instance of the TintLayer and set its properties var stamenTileLayer = new TintLayer({ urlTemplate: "http://webst01.is.autonavi.com/appmaptile?style=6&x={x}&y={y}&z={z}", tint: new Color("#004FBB"), title: "高德" }); // add the new instance of the custom tile layer the map var map = new Map({ layers: [stamenTileLayer] }); // create a new scene view and add the map var view = new SceneView({ container: "viewDiv", map: map, center: [0, 30], zoom: 3 }); // create a layer list widget var layerList = new LayerList({ view: view, }); view.ui.add(layerList, "top-right"); }); </script>
</head>
<body>
<div id="viewDiv"></div>
</body>
</html>
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ArcGIS API for JavaScript 4.6 版本載入高德地
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