SWRIS-HD/Controls/RealTimeLineChart.xaml.cs

using Microsoft.Win32;
using ScottPlot;
using ScottPlot.Plottables;
using ScottPlot.WPF;
using SWRIS.Core;
using SWRIS.Models;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Threading;
namespace SWRIS.Controls
{
    /// <summary>
    /// 动态折线图用户控件（基于 ScottPlot.WPF 的高性能版本）
    /// </summary>
    public partial class RealTimeLineChart : UserControl
    {
        #region 依赖属性定义

        public static readonly DependencyProperty SensorCountProperty =
            DependencyProperty.Register(
                nameof(SensorCount),
                typeof(int),
                typeof(RealTimeLineChart),
                new PropertyMetadata(4, OnSensorCountChanged));

        public static readonly DependencyProperty RopeLengthProperty =
            DependencyProperty.Register(
                nameof(RopeLength),
                typeof(double),
                typeof(RealTimeLineChart),
                new PropertyMetadata(100.0, OnAxisXChanged));

        public static readonly DependencyProperty SamplingStepProperty =
          DependencyProperty.Register(
              nameof(SamplingStep),
              typeof(double),
              typeof(RealTimeLineChart),
              new PropertyMetadata(0.1275));

        #endregion

        #region CLR 包装属性

        public int SensorCount
        {
            get => (int)GetValue(SensorCountProperty);
            set => SetValue(SensorCountProperty, value);
        }

        public double RopeLength
        {
            get => (double)GetValue(RopeLengthProperty);
            set => SetValue(RopeLengthProperty, value);
        }

        public double SamplingStep
        {
            get => (double)GetValue(SamplingStepProperty);
            set => SetValue(SamplingStepProperty, value);
        }

        #endregion

        public double? _lastPosition = null;
        private ConcurrentQueue<ushort> _sensorDataQueues;
        private const double MINDAMAGE = 40; // 最小损伤值
        private const double MAXDAMAGE = 120; // 最大损伤值
        private int _displayPoints = 1000000; // 显示点数
        private DispatcherTimer UpdatePlotTimer;
        private DataLogger _dataLogger;

        public RealTimeLineChart()
        {
            InitializeComponent();
            InitializePlot();
        }

        private void OnLoaded(object sender, RoutedEventArgs e)
        {
            InitializePlot();
        }

        #region 初始化方法
        private void InitializePlot()
        {
            WpfPlot.Menu?.Clear();

            WpfPlot.Menu.Add("保存图片", pt =>
            {
                OpenSaveImageDialog(pt);
            });
            WpfPlot.Menu.Add("清除曲线", pt =>
            {
                ClearPoints();
            });
            WpfPlot.Menu.Add("重置视图", pt =>
            {
                SetLimits();
            });
            var plot = WpfPlot.Plot;
            plot.Clear();
            plot.DataBackground.Color = Colors.Transparent;
            plot.FigureBackground.Color = Colors.Transparent;
            plot.Grid.MajorLineColor = new Color(59, 59, 123).WithOpacity(0.6);
            plot.Grid.XAxis.TickLabelStyle.ForeColor = new Color(151, 166, 212);
            plot.Grid.YAxis.TickLabelStyle.ForeColor = new Color(151, 166, 212);
            plot.Grid.XAxis.FrameLineStyle.Color = new Color(53, 53, 112);
            plot.Grid.XAxis.FrameLineStyle.Width = 2;
            plot.Grid.YAxis.FrameLineStyle.Color = new Color(53, 53, 112);
            plot.Grid.YAxis.FrameLineStyle.Width = 2;
            plot.Grid.XAxis.MajorTickStyle.Color = new Color(53, 53, 112);
            plot.Grid.XAxis.MajorTickStyle.Width = 1;
            plot.Grid.YAxis.MajorTickStyle.Color = new Color(53, 53, 112);
            plot.Grid.YAxis.MajorTickStyle.Width = 1;
            plot.Grid.YAxis.MinorTickStyle.Color = new Color(53, 53, 112);
            plot.Grid.XAxis.MinorTickStyle.Color = new Color(53, 53, 112);
            plot.Axes.Hairline(false);

            _sensorDataQueues = new ConcurrentQueue<ushort>();

            _dataLogger = plot.Add.DataLogger();
            _dataLogger.LineWidth = 2;
            _dataLogger.Color = new Color("#f47c7c");
            _dataLogger.ManageAxisLimits = false;

            WpfPlot.Plot.Axes.SetLimits(0, RopeLength * 1.2, MINDAMAGE, MAXDAMAGE);
            WpfPlot.Refresh();

            UpdatePlotTimer?.Stop();
            UpdatePlotTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(200) };
            UpdatePlotTimer.Tick += (s, d) =>
            {
                if (_dataLogger.HasNewData)
                {
                    SetLimits();
                }
            };
            UpdatePlotTimer.Start();
        }
        #endregion

        #region 数据操作方法
        private void SetLimits()
        {
            if (_lastPosition == null || _lastPosition.Value < RopeLength)
            {
                WpfPlot.Plot.Axes.SetLimits(0, RopeLength * 1.2, MINDAMAGE, MAXDAMAGE);
            }
            else
            {
                WpfPlot.Plot.Axes.SetLimits(0, _lastPosition.Value + (RopeLength * 0.12), MINDAMAGE, MAXDAMAGE);
            }
            WpfPlot.Refresh();
        }
        public void ClearPoints()
        {
            lock (_sensorDataQueues)
            {
                while (_sensorDataQueues.TryDequeue(out _)) ;
            }
            _dataLogger.Clear();
            WpfPlot.Refresh();
        }
        public void AddDataPoints(Coordinates[] chartData)
        {
            _dataLogger.Add(chartData);
            _lastPosition = chartData.LastOrDefault().X;
            WpfPlot.Refresh();
        }
        public Coordinates[] GetChartSource()
        {
            return _dataLogger.Data.Coordinates.ToArray();
        }
        public void AddDataPoints((double Position, LiveStreamDataModel ListStream) dataPoints, int[] inUseSensors)
        {
            if (_lastPosition == null)
            {
                _lastPosition = dataPoints.Position;
                return;
            }
            if (dataPoints.Position < _lastPosition)
            {
                lock (_sensorDataQueues)
                {
                    while (_sensorDataQueues.TryDequeue(out _)) ;
                    _lastPosition = dataPoints.Position;
                }
                _dataLogger.Data.Clear();
            }
            else
            {
                for (int i = 0; i < dataPoints.ListStream.SampleCount; i++)
                {
                    ushort totalValue = 0;
                    ushort totalCount = 0;
                    ushort[] values = dataPoints.ListStream.Data[i];
                    foreach (var j in inUseSensors)
                    {
                        totalCount++;
                        totalValue += values[j - 1];
                    }
                    _sensorDataQueues.Enqueue((ushort)(totalValue / totalCount));
                }
            }
            if (dataPoints.Position > _lastPosition)
            {
                UpdateLoop(_lastPosition.Value, dataPoints.Position);
                _lastPosition = dataPoints.Position;
            }
        }
        public void OpenSaveImageDialog(Plot plot)
        {
            SaveFileDialog saveFileDialog = new SaveFileDialog
            {
                Filter = "PNG Files (*.png)|*.png|JPEG Files (*.jpg, *.jpeg)|*.jpg;*.jpeg|BMP Files (*.bmp)|*.bmp|WebP Files (*.webp)|*.webp|SVG Files (*.svg)|*.svg|All files (*.*)|*.*"
            };
            bool? flag = saveFileDialog.ShowDialog();
            if (flag.HasValue && flag == true && !string.IsNullOrEmpty(saveFileDialog.FileName))
            {
                ImageFormat format;
                try
                {
                    format = ImageFormats.FromFilename(saveFileDialog.FileName);
                }
                catch (ArgumentException)
                {
                    MessageBox.Show("Unsupported image file format", "ERROR", MessageBoxButton.OK, MessageBoxImage.Hand);
                    return;
                }

                try
                {
                    PixelSize size = plot.RenderManager.LastRender.FigureRect.Size;
                    plot.Save(saveFileDialog.FileName, (int)size.Width, (int)size.Height, format);
                }
                catch (Exception)
                {
                    MessageBox.Show("Image save failed", "ERROR", MessageBoxButton.OK, MessageBoxImage.Hand);
                }
            }
        }
        private void UpdateLoop(double lastPosition, double position)
        {
            try
            {
                // 在后台线程准备数据
                List<(double x, ushort y)> dataToAdd = new List<(double x, ushort y)>();

                var step = (position - lastPosition) / Math.Max(1, _sensorDataQueues.Count);
                double currentX = lastPosition;

                while (_sensorDataQueues.TryDequeue(out ushort data))
                {
                    currentX += step;
                    // 确保 x 值严格递增
                    if (dataToAdd.Count > 0 && currentX <= dataToAdd[dataToAdd.Count - 1].x)
                    {
                        currentX = dataToAdd[dataToAdd.Count - 1].x + Math.Abs(step) * 0.001;
                    }
                    dataToAdd.Add((currentX, data));
                }

                // 在UI线程批量添加
                Dispatcher.Invoke(() =>
                {
                    lock (_dataLogger)
                    {
                        // 获取最后一个点的 x 值
                        double lastX = _dataLogger.Data.Coordinates.Count > 0
                            ? _dataLogger.Data.Coordinates[_dataLogger.Data.Coordinates.Count - 1].X
                            : double.MinValue;

                        foreach (var point in dataToAdd)
                        {
                            double safeX = point.x;
                            if (safeX <= lastX)
                            {
                                safeX = lastX + Math.Abs(position - lastPosition) * 0.0001;
                            }
                            _dataLogger.Add(safeX, point.y);
                            lastX = safeX;
                        }
                    }

                    // 清理操作
                    if (_dataLogger.Data.Coordinates.Count > _displayPoints)
                    {
                        int removeCount = (int)(_displayPoints * 0.1d);
                        removeCount = Math.Min(removeCount, _dataLogger.Data.Coordinates.Count - 1);
                        if (removeCount > 0)
                        {
                            _dataLogger.Data.Coordinates.RemoveRange(0, removeCount);
                        }
                    }
                });
            }
            catch (Exception ex)
            {
                LogHelper.Error($"绘制曲线时发生错误：{ex.Message}", ex);
            }
        }

        #endregion

        #region 静态回调

        private static void OnSensorCountChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if (d is RealTimeLineChart control)
                control.OnSensorCountChanged((int)e.OldValue, (int)e.NewValue);
        }
        private static void OnAxisXChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if (d is RealTimeLineChart control)
                control.UpdateAxisX();
        }

        #endregion
        #region 坐标轴更新逻辑
        private void UpdateAxisX()
        {
            if (WpfPlot?.Plot == null) return;

            WpfPlot.Plot.Axes.SetLimitsX(0, RopeLength * 1.2);
            WpfPlot.Refresh();
        }
        #endregion
        #region 传感器数量变化处理

        private void OnSensorCountChanged(int oldCount, int newCount)
        {
            Dispatcher.Invoke(() =>
            {
                InitializePlot();
            });
        }
        #endregion
    }
}