Merge pull request #52 from gratefulEachOne/main

fix : 🐛 This object was destroyed

Author: dengxiaoning

src/utils/cesiumPluginsExtends/libs/Draw.js

@@ -839,7 +839,7 @@ Draw.prototype = {
   },
   // 移除所以handler 监听
   removeEventHandler() {
-    if(drawHandler){
+    if(drawHandler&&!drawHandler.isDestroyed()){
     drawHandler.removeInputAction(Cesium.ScreenSpaceEventType.MOUSE_MOVE)
     drawHandler.removeInputAction(Cesium.ScreenSpaceEventType.RIGHT_CLICK)
     drawHandler.removeInputAction(Cesium.ScreenSpaceEventType.LEFT_CLICK) //移除事件