添加高德地图对WGS84的支持

src/core/imagery/provider/AmapImageryProvider.js

@@ -4,6 +4,7 @@
  */
 
 import ImageryType from '../ImageryType'
+import AmapMercatorTilingScheme from '../tiling-scheme/AmapMercatorTilingScheme'
 
 const { Cesium } = DC.Namespace
 
@@ -17,6 +18,9 @@ class AmapImageryProvider extends Cesium.UrlTemplateImageryProvider {
   constructor(options = {}) {
     options['url'] = options.style === 'img' ? IMG_URL : ELEC_URL
     options['subdomains'] = options.subdomains || ['01', '02', '03', '04']
+    if (options.crs === 'WGS84') {
+      options['tilingScheme'] = new AmapMercatorTilingScheme()
+    }
     super(options)
   }
 }

src/core/imagery/tiling-scheme/AmapMercatorTilingScheme.js

@@ -0,0 +1,39 @@
+/**
+ * @Author: Caven
+ * @Date: 2021-01-31 22:07:05
+ */
+
+import CoordTransform from '../../transform/CoordTransform'
+
+class AmapMercatorTilingScheme extends Cesium.WebMercatorTilingScheme {
+  constructor(options) {
+    super(options)
+    let projection = new Cesium.WebMercatorProjection()
+    this._projection.project = function(cartographic, result) {
+      result = CoordTransform.WGS84ToGCJ02(
+        Cesium.Math.toDegrees(cartographic.longitude),
+        Cesium.Math.toDegrees(cartographic.latitude)
+      )
+      result = projection.project(
+        new Cesium.Cartographic(
+          Cesium.Math.toRadians(result[0]),
+          Cesium.Math.toRadians(result[1])
+        )
+      )
+      return new Cesium.Cartesian2(result.x, result.y)
+    }
+    this._projection.unproject = function(cartesian, result) {
+      let cartographic = projection.unproject(cartesian)
+      result = CoordTransform.GCJ02ToWGS84(
+        Cesium.Math.toDegrees(cartographic.longitude),
+        Cesium.Math.toDegrees(cartographic.latitude)
+      )
+      return new Cesium.Cartographic(
+        Cesium.Math.toRadians(result[0]),
+        Cesium.Math.toRadians(result[1])
+      )
+    }
+  }
+}
+
+export default AmapMercatorTilingScheme