限制卫星影像到 ±85°，极区改用冰盖底色解决黑洞

2026-09-19 14:32:01 +08:00
parent 018d5787da
commit 67ad4f29af
1 changed files with 3 additions and 1 deletions
@@ -236,7 +236,9 @@ export class CesiumGlobe {
      credit: 'Imagery © Esri, Maxar, Earthstar Geographics',
      maximumLevel: 19,
    });
-    viewer.imageryLayers.addImageryProvider(imagery);
+    const imageryLayer = viewer.imageryLayers.addImageryProvider(imagery);
+    // 卫星影像不覆盖极区（约 ±85° 外返回黑块），限制范围让极区用冰盖底色
+    imageryLayer.rectangle = Cesium.Rectangle.fromDegrees(-180, -85, 180, 85);

    // 真实地形（Esri World Elevation 3D，免费无 token；失败则保持默认椭球）
    const terrain = new Cesium.Terrain(