变量优化

KinectCar/MainWindow.xaml.cs

@@ -22,29 +22,29 @@ namespace KinectCar
         // 活动的 Kinect 传感器
         private KinectSensor _kinectSensor = null;
         // 坐标映射器将一种类型的点映射到另一种
-        private CoordinateMapper coordinateMapper = null;
+        private CoordinateMapper _coordinateMapper = null;
         // 身体框架渲染器
-        private BodyFrameReader bodyFrameReader = null;
+        private BodyFrameReader _bodyFrameReader = null;
         // 颜色框架渲染器
-        private ColorFrameReader colorFrameReader = null;
+        private ColorFrameReader _colorFrameReader = null;
         // 身体的数组
         private Body[] _bodies = null;
         // 骨骼的定义
         private List<Tuple<JointType, JointType>> _bones;
         // 显示宽度，高度（深度空间）
-        private int displayWidth, displayHeight;
+        private int _displayWidth, _displayHeight;
         // 要显示的当前状态文本
-        private string statusText = null;
+        private string _statusText = null;
         // 阈值（1/2框）（单位：米）
         private const float Threshold = 0.15f;
         // 当前状态
         private int _gesture = -1;
         // Bitmap to display
-        private WriteableBitmap _colorBitmap = null;
+        private WriteableBitmap _colorBitmap;
 
         private static string MQTT_BROKER_ADDRESS = "123.207.151.92";
         // 创建客户端实例
-        MqttClient _client = new MqttClient(IPAddress.Parse(MQTT_BROKER_ADDRESS), 1600, false, null, null, MqttSslProtocols.None); //主机为IP时
+        MqttClient _client = new MqttClient(IPAddress.Parse(MQTT_BROKER_ADDRESS), 1600, false, null, null, MqttSslProtocols.None); // 主机为IP时
 
         // INotifyPropertyChangedPropertyChanged 事件允许窗口控件绑定到可更改的数据
         public event PropertyChangedEventHandler PropertyChanged;
@@ -53,21 +53,15 @@ namespace KinectCar
         {
             get
             {
-                return statusText;
+                return _statusText;
             }
 
             set
             {
-                if (statusText != value)
-                {
-                    statusText = value;
-
-                    // 通知任何绑定元素文本已更改
-                    if (PropertyChanged != null)
-                    {
-                        PropertyChanged(this, new PropertyChangedEventArgs("StatusText"));
-                    }
-                }
+                if (_statusText == value) return;
+                _statusText = value;
+                // 通知任何绑定元素文本已更改
+                PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("StatusText"));
             }
         }
 
@@ -76,16 +70,16 @@ namespace KinectCar
             // 目前支持一个传感器
             _kinectSensor = KinectSensor.GetDefault();
             // 获取坐标映射器
-            coordinateMapper = _kinectSensor.CoordinateMapper;
+            _coordinateMapper = _kinectSensor.CoordinateMapper;
             // 获取深度（显示）范围
             var frameDescription = _kinectSensor.DepthFrameSource.FrameDescription;
             // 得到关节空间的大小
-            displayWidth = frameDescription.Width;
-            displayHeight = frameDescription.Height;
+            _displayWidth = frameDescription.Width;
+            _displayHeight = frameDescription.Height;
             // 打开身体框架的渲染器
-            bodyFrameReader = _kinectSensor.BodyFrameSource.OpenReader();
+            _bodyFrameReader = _kinectSensor.BodyFrameSource.OpenReader();
             // 打开颜色框架的渲染器
-            colorFrameReader = _kinectSensor.ColorFrameSource.OpenReader();
+            _colorFrameReader = _kinectSensor.ColorFrameSource.OpenReader();
             // 骨骼定义为两个关节之间的线
             _bones = new List<Tuple<JointType, JointType>>
             {
@@ -134,13 +128,13 @@ namespace KinectCar
 
         private void Window_Loaded(object sender, RoutedEventArgs e)
         {
-            if (bodyFrameReader != null)
+            if (_bodyFrameReader != null)
             {
-                bodyFrameReader.FrameArrived += Reader_FrameArrived;
+                _bodyFrameReader.FrameArrived += Reader_FrameArrived;
             }
-            if (colorFrameReader != null)
+            if (_colorFrameReader != null)
             {
-                colorFrameReader.FrameArrived += Reader_ColorFrameArrived;
+                _colorFrameReader.FrameArrived += Reader_ColorFrameArrived;
             }
             // create the colorFrameDescription from the ColorFrameSource using Bgra format
             var colorFrameDescription = _kinectSensor.ColorFrameSource.CreateFrameDescription(ColorImageFormat.Bgra);
@@ -150,7 +144,7 @@ namespace KinectCar
             // 注册消息接收处理事件，还可以注册消息订阅成功、取消订阅成功、与服务器断开等事件处理函数
             _client.MqttMsgPublishReceived += ClientMqttMsgPublishReceived;
             //生成客户端 ID 并连接服务器
-            string clientId = Guid.NewGuid().ToString();
+            var clientId = Guid.NewGuid().ToString();
             _client.Connect(clientId, "yumin", "minbb.cn");
             // 订阅主题"" 消息质量为 2
             _client.Subscribe(new string[] { "iot.time" }, new byte[] { MqttMsgBase.QOS_LEVEL_EXACTLY_ONCE });
@@ -160,16 +154,16 @@ namespace KinectCar
 
         private void Window_Closing(object sender, CancelEventArgs e)
         {
-            if (bodyFrameReader != null)
+            if (_bodyFrameReader != null)
             {
-                bodyFrameReader.Dispose();
-                bodyFrameReader = null;
+                _bodyFrameReader.Dispose();
+                _bodyFrameReader = null;
             }
 
-            if (colorFrameReader != null)
+            if (_colorFrameReader != null)
             {
-                colorFrameReader.Dispose();
-                colorFrameReader = null;
+                _colorFrameReader.Dispose();
+                _colorFrameReader = null;
             }
 
             if (_kinectSensor != null)
@@ -341,7 +335,10 @@ namespace KinectCar
                             colorFrame.CopyConvertedFrameDataToIntPtr(_colorBitmap.BackBuffer,
                                 (uint)(colorFrameDescription.Width * colorFrameDescription.Height * 4),
                                 ColorImageFormat.Bgra);
-                            _colorBitmap.AddDirtyRect(new Int32Rect(0, 0, _colorBitmap.PixelWidth, _colorBitmap.PixelHeight));
+                            var rect = new Int32Rect(0, 0, _colorBitmap.PixelWidth, _colorBitmap.PixelHeight);
+                            Console.WriteLine(rect == null);
+                            _colorBitmap.AddDirtyRect(rect);
+                            Console.WriteLine(_colorBitmap == null);
                             Console.WriteLine(Image.Source == null);
                         }
                         _colorBitmap.Unlock();