CapMachine/CapMachine.Wpf/Models/ChartRtSeries.cs

using Arction.Wpf.Charting;
using Arction.Wpf.Charting.Annotations;
using Arction.Wpf.Charting.Axes;
using Arction.Wpf.Charting.Series3D;
using Arction.Wpf.Charting.SeriesXY;
using Arction.Wpf.Charting.Views.ViewXY;
using ImTools;
using Prism.Mvvm;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;

namespace CapMachine.Wpf.Models
{
    /// <summary>
    /// 曲线实时系列模型
    /// </summary>
    public class ChartRtSeries:BindableBase
    {
        public ChartRtSeries(AxisY axisY, LightningChart lightningChart, string SeriesName)
        {
            //var CreateAxisY = new AxisY();
            //CreateAxisY.Title.Text = Name;
            //CreateAxisY.Title.AllowDragging = false;
            //CreateAxisY.SetRange(0, 100);
            //CreateAxisY.MajorGrid.Visible = false;
            ////取消滚轮缩放
            //CreateAxisY.ZoomingEnabled = false;

            //模型赋值
            LightningChartInstance = lightningChart;
            ChartAxisY = axisY;
            ChartAxisX = lightningChart.ViewXY.XAxes[0];
            Name = SeriesName;

            Unit = "℃";

            //判断别重复，因为可能共用Y轴的信息
            //绑定lightningChart
            lightningChart.ViewXY.YAxes.Add(axisY);

            ChartPointLineSeries = new PointLineSeries(lightningChart.ViewXY, lightningChart.ViewXY.XAxes[0], axisY);
            ChartPointLineSeries.Title.Text = SeriesName;
            //绑定lightningChart
            lightningChart.ViewXY.PointLineSeries.Add(ChartPointLineSeries);
        }

        ///// <summary>
        ///// 名称
        ///// </summary>
        //public string? Name { get; set; }

        ///// <summary>
        ///// 值
        ///// </summary>
        //public double Value { get; set; }

        ///// <summary>
        ///// Max
        ///// </summary>
        //public double Max { get; set; }

        ///// <summary>
        ///// Min
        ///// </summary>
        //public double Min { get; set; }

        ///// <summary>
        ///// 单位
        ///// </summary>
        //public string? Unit { get; set; }

        private string? _Name;
        /// <summary>
        /// 名称
        /// </summary>
        public string? Name
        {
            get { return _Name; }
            set { _Name = value; RaisePropertyChanged(); }
        }

        private double _Value;
        /// <summary>
        /// 值
        /// </summary>
        public double Value
        {
            get { return _Value; }
            set { _Value = value; RaisePropertyChanged(); }
        }

        private double _Max;
        /// <summary>
        /// Max
        /// </summary>
        public double Max
        {
            get { return _Max; }
            set { _Max = value; RaisePropertyChanged(); }
        }

        private double _Min;
        /// <summary>
        /// Min
        /// </summary>
        public double Min
        {
            get { return _Min; }
            set { _Min = value; RaisePropertyChanged(); }
        }


        private string? _Unit;
        /// <summary>
        /// 单位
        /// </summary>
        public string? Unit
        {
            get { return _Unit; }
            set { _Unit = value; RaisePropertyChanged(); }
        }

        /// <summary>
        /// 曲线
        /// </summary>
        public PointLineSeries? ChartPointLineSeries { get; set; }

        /// <summary>
        /// Y轴
        /// </summary>
        public AxisY? ChartAxisY { get; set; }

        /// <summary>
        /// X轴
        /// </summary>
        public AxisX? ChartAxisX { get; set; }

        /// <summary>
        /// LightningChart 实例
        /// </summary>
        public LightningChart LightningChartInstance { get; set; }

        /// <summary>
        /// X轴滚动
        /// </summary>
        private bool ScrollEnable = true;


        /// <summary>
        /// Chart图表X轴的跨度-秒
        /// </summary>
        private int ChartXDateTimeRange = 3600;

        /// <summary>
        /// 增加数据
        /// </summary>
        public void AddValue(double Data)
        {
            //foreach (var item in lightningChart1.ViewXY.PointLineSeries)
            //{
            //Disable updates, to prevent several extra refreshes
            LightningChartInstance.BeginUpdate();

            //Array for 1 point
            SeriesPoint[] points = new SeriesPoint[1];

            //Convert 'Now' to X value 
            var _previousX = LightningChartInstance.ViewXY.XAxes[0].DateTimeToAxisValue(DateTime.Now);
            points[0].X = _previousX;
            points[0].Y = Data;
            //Add the new point into end of first PointLineSeries
            ChartPointLineSeries.AddPoints(points, false);

            ChartPointLineSeries.DeletePointsBeforeX(_previousX - ChartXDateTimeRange);
            //item.DeletePointsBeforeX(_previousX - 100);

            if (ScrollEnable)
            {
                LightningChartInstance.ViewXY.XAxes[0].ScrollPosition = _previousX;
            }


            //Allow updates again, and update
            LightningChartInstance.EndUpdate();

            //}
        }

        /// <summary>
        /// Solve value from series data points array. Accurate method, but slower than SolveValueCoarse
        /// </summary>
        /// <param name="series">Series</param>
        /// <param name="xValue">X value</param>
        /// <param name="yValue">Output Y value</param>
        /// <returns>Success status</returns>
        private bool SolveValueAccurate(PointLineSeries series, double xValue, out double yValue)
        {
            AxisY axisY = LightningChartInstance.ViewXY.YAxes[series.AssignYAxisIndex];
            yValue = 0;

            LineSeriesValueSolveResult result = series.SolveYValueAtXValue(xValue);
            if (result.SolveStatus == LineSeriesSolveStatus.OK)
            {
                //PointLineSeries may have two or more points at same X value. If so, center it between min and max 
                yValue = (result.YMax + result.YMin) / 2.0;
                return true;
            }
            else
            {
                return false;
            }
        }

        /// <summary>
        /// Solve value from screen coordinates. Faster method, but not less accurateValue than SolveValueAccurate 
        /// </summary>
        /// <param name="series">Series</param>
        /// <param name="xValue">X value</param>
        /// <param name="yValue">Output Y value</param>
        /// <returns>Success status</returns>
        private bool SolveValueCoarse(PointLineSeries series, double xValue, out double yValue)
        {
            AxisY axisY = LightningChartInstance.ViewXY.YAxes[series.AssignYAxisIndex];
            float coordX = LightningChartInstance.ViewXY.XAxes[0].ValueToCoord(xValue);
            float coordY;
            yValue = 0;

            LineSeriesCoordinateSolveResult result = series.SolveYCoordAtXCoord(coordX);
            if (result.SolveStatus == LineSeriesSolveStatus.OK)
            {
                coordY = (result.CoordBottom + result.CoordTop) / 2f;
                if (axisY.CoordToValue((int)Math.Round(coordY), out yValue) == false)
                {
                    return false;
                }
            }
            else
            {
                return false;
            }

            return true;
        }

    }
}