From 67ad4f29af8210b4e9232cc16dcb75f0d2a748ef Mon Sep 17 00:00:00 2001
From: fukunee <fukun.ee@foxmail.com>
Date: Sat, 19 Sep 2026 14:32:01 +0800
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---
 src/scene/CesiumGlobe.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/scene/CesiumGlobe.js b/src/scene/CesiumGlobe.js
index b50a7cc..b014fab 100644
--- a/src/scene/CesiumGlobe.js
+++ b/src/scene/CesiumGlobe.js
@@ -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(