drawThread

VideoProsessing/src/main.cpp

@@ -98,17 +98,19 @@ void getMsgCallback(mqtt::const_message_ptr msg)
         try {
             // TODO 处理接收到到的位置数据
             auto json = nlohmann::json::parse(payload);
-            //绘制标况            
+            //绘制 接收到的坐标 的方框
-            for(auto & ii :json)
+            thread([json](){
-            {
+                for(auto & ii :json)
-                int x = static_cast<int>(ii["x"]);
+                {
-                int y = static_cast<int>(ii["y"]);
+                    int x = static_cast<int>(ii["x"]);
-                int w = static_cast<int>(ii["w"]);
+                    int y = static_cast<int>(ii["y"]);
-                int h = static_cast<int>(ii["h"]);
+                    int w = static_cast<int>(ii["w"]);
-                double distance = static_cast<double>(ii["distance"]);
+                    int h = static_cast<int>(ii["h"]);
-                drawRect(x,y,w,h,distance);
+                    double distance = static_cast<double>(ii["distance"]);
-            }
+                    drawRect(x,y,w,h,distance);
-
+                }
+            }).detach();
+           
         }
         catch (const nlohmann::json::parse_error &e) {
             cerr << "JSON 解析错误: " << e.what() << "\n原始 payload: " << payload << "\n";