change the log

CHANGES_en.md

 # Change Log
 
+### 2.2.2 - 2021-05-29
+
+#### Additions 🎉
+
+- Open some Cesium internal properties
+- Add viewshed analysis
+- Add contour line analysis
+
+#### Fixes 🔧
+
+- Improve camera general tools
+- Improve the heading-pitch-roll setting of Tileset
+
 ### 2.2.1 - 2021-05-22
 
 #### Additions 🎉

CHANGES_zh.md

 # Change Log
 
+### 2.2.2 - 2021-05-29
+
+#### Additions 🎉
+
+- 开放部分Cesium内部属性
+- 添加可视域分析
+- 添加等高线分析
+
+#### Fixes 🔧
+
+- 完善相机通用工具
+- 完善Tileset的heading-pitch-roll的设置
+
 ### 2.2.1 - 2021-05-22
 
 #### Additions 🎉

modules/viewer/Viewer.js

   }
 
   get postProcessStages() {
-    return this._delegate.postProcessStages
+    return this._delegate.scene.postProcessStages
   }
 
   get clock() {