WPF动态折线图

此项目源码下载地址：https://github.com/lizhiqiang0204/WpfLineChartV1.1

效果图如下：

此项目把折线图制作成了一个控件，在主界面设置好参数直接调用即可，下面是主程序片段

        public MainWindow()
        {
            InitializeComponent();
            userControl1_Para.xGrap = 2;//设置X轴相邻采集点的间隔
            userControl1_Para.xGrapLable = 100;//设置X轴时间标签的间隔
            userControl1_Para.xGrapLablePoint = userControl1_Para.xGrapLable/ userControl1_Para.xGrap;//相邻两个时间标签内有多少个采集点
            userControl1_Para.xWidth = userControl.Width - 50;
            userControl1_Para.yGrap = -10;
            userControl1_Para.yStartValue = 100;
            userControl1_Para.yGrapLable = 50;
            userControl1_Para.yLables = ((int)userControl.Height - 50) / userControl1_Para.yGrapLable;
            userControl.myCanvasInit(userControl1_Para);

        }
        private void timer_Tick(object sender, EventArgs e)
        {
            y = y + 0.1;

            //随机生成Y坐标
            //collectPoint.point = new Point(i, (new Random()).Next(0, 100));
            collectPoint.point = new Point(x, Math.Sin(y)*100+100);
            collectPoint.curTime = DateTime.Now;
            userControl.AddPoint1(collectPoint);
        }

类库添加点的函数

        public void AddPoint1(CollectPoint collectPoint)
        {
            x = x + userControl1_Para.xGrap;
            collectPoint.point.X = x;

            //移动背景不移动点
            double xMove = collectPoint.point.X  * (-1) + userControl1_Para.xWidth;
            _myPolyline.Points.Add(collectPoint.point);//添加新的数据点
           _myCanvas.Margin = new Thickness(xMove, 0, 0, 0);//设置外边距实现移动，放大缩小

            //移动X轴标签背景
            TextBlock xText = new TextBlock();
            xText.Visibility = Visibility.Hidden;
            xText.SetValue(Grid.RowProperty, 1); //设置按钮所在Grid控件的行
            xGrid.Children.Add(xText);//为每个点添加对应的时间值
            xText.Text = collectPoint.curTime.ToString("HH:mm:ss");
            xText.Margin = new Thickness(collectPoint.point.X, 0, 0, 0);
            collectPoints.Add((new CollectPoint() { point = collectPoint.point, curTime = collectPoint.curTime }));
            xLableCanvas.Margin = new Thickness(xMove, 0, 0, 0);//设置外边距实现移动，放大缩小

            if (xMove % userControl1_Para.xGrapLable == 0)
                xText.Visibility = Visibility.Visible;

            if (collectPoint.point.X > userControl1_Para.xWidth)
            {
                _myPolyline.Points.RemoveAt(0);
                collectPoints.RemoveAt(0);
                xGrid.Children.RemoveAt(0);
            }
        }