文章目录
-
- avalonia、WPF使用ScottPlot动态显示ECG心电图
- 实现效果，动态效果懒得录视频了
- 安装
- 代码部分
- [UpdateData方法就是用来更新心电图表的方法， 根据消息队列数据去更新是视图中的ScottPlot 图表](#UpdateData方法就是用来更新心电图表的方法， 根据消息队列数据去更新是视图中的ScottPlot 图表)
avalonia、WPF使用ScottPlot动态显示ECG心电图
avalonia、WPF使用ScottPlot动态显示ECG心电图
实现效果，动态效果懒得录视频了
安装
1.安装ScottPlot.Avalonia NuGet包
注意：
如果开发环境是macos、linux，需要按照官网步骤配置环境
此处是官网配置链接
代码部分
view部分 注意安装包之后引入
xmlns:ScottPlot="clr-namespace:ScottPlot.Avalonia;assembly=ScottPlot.Avalonia"
csharp
<Window xmlns="https://github.com/avaloniaui"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d" d:DesignWidth="1920" d:DesignHeight="600"
xmlns:vm="using:AvaloniaMedical.ViewModels"
x:Class="AvaloniaMedical.Views.xx"
xmlns:ScottPlot="clr-namespace:ScottPlot.Avalonia;assembly=ScottPlot.Avalonia"
x:DataType="vm:xx"
xmlns:views="clr-namespace:AvaloniaMedical.Views"
xmlns:i="clr-namespace:Avalonia.Xaml.Interactivity;assembly=Avalonia.Xaml.Interactivity"
xmlns:controls1="clr-namespace:Material.Styles.Controls;assembly=Material.Styles"
Background="#31363A"
>
此处只显示三导心电
<ScottPlot:AvaPlot Height="200" Name="AvaPlotName1" Grid.Row="1" Grid.Column="0" >
</ScottPlot:AvaPlot>
<ScottPlot:AvaPlot Height="200" Name="AvaPlotName2" Grid.Row="2" Grid.Column="0" >
</ScottPlot:AvaPlot>
<ScottPlot:AvaPlot Height="200" Name="AvaPlotName3" Grid.Row="3" Grid.Column="0" >
</ScottPlot:AvaPlot>
</Window>
csharp
using System;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Threading;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Data;
using Avalonia.Markup.Xaml;
using Avalonia.Threading;
using AvaloniaMedical.ViewModels;
using Npoi.Mapper;
using ScottPlot;
using ScottPlot.Avalonia;
using ScottPlot.Plottable;
namespace AvaloniaMedical.Views;
public partial class xx : Window
{
private readonly double[] liveData = new double[4000];
private readonly double[] liveData2 = new double[4000];
private readonly double[] liveData3 = new double[4000];
private readonly Timer _updateDataTimer;
private readonly DispatcherTimer _renderTimer;
private readonly VLine vline;
private readonly VLine vline2;
private readonly VLine vline3;
int nextValueIndex = -1;
int nextValueIndex2 = -1;
int nextValueIndex3= -1;
AvaPlot AvaPlot1;
AvaPlot AvaPlot2;
AvaPlot AvaPlot3;
public xx()
{
InitializeComponent();
#if DEBUG
this.AttachDevTools();
#endif
AvaPlot1 = this.Find<AvaPlot>("AvaPlotName1");
AvaPlot2 = this.Find<AvaPlot>("AvaPlotName2");
AvaPlot3 = this.Find<AvaPlot>("AvaPlotName3");
AvaPlot1.Plot.AddSignal(liveData, 1, color: Color.LightGreen);
AvaPlot1.Plot.AxisAutoX(margin: 0);
AvaPlot1.Plot.SetAxisLimits(yMin: 2, yMax:7);
AvaPlot2.Plot.AddSignal(liveData2, 1, color: Color.LightGreen);
AvaPlot2.Plot.AxisAutoX(margin: 0);
AvaPlot2.Plot.SetAxisLimits(yMin: 2, yMax: 7);
AvaPlot3.Plot.AddSignal(liveData3, 1, color: Color.LightGreen);
AvaPlot3.Plot.AxisAutoX(margin: 0);
AvaPlot3.Plot.SetAxisLimits(yMin: 2, yMax: 7);
vline = AvaPlot1.Plot.AddVerticalLine(0, Color.LightGreen, 1);
vline2 = AvaPlot2.Plot.AddVerticalLine(0, Color.LightGreen, 1);
vline3 = AvaPlot3.Plot.AddVerticalLine(0, Color.LightGreen, 1);
///Binding binding = new Binding();
binding.Source = AvaPlot1;
binding.Path = new ropertyPath();
AvaPlot1.SetValue(TagProperty, 0);
AvaPlot1.Plot.Style(Style.Gray1);
AvaPlot2.Plot.Style(Style.Gray1);
AvaPlot3.Plot.Style(Style.Gray1);
customize styling
//AvaPlot1.Plot.Title("Electrocardiogram Strip Chart");
AvaPlot1.Plot.Grid(true);
AvaPlot2.Plot.Grid(true);
AvaPlot3.Plot.Grid(true);
// create a traditional timer to update the data
//_updateDataTimer = new Timer(_ => UpdateData(), null, 0, 1);
create a separate timer to update the GUI
_renderTimer = new DispatcherTimer
{
Interval = TimeSpan.FromMilliseconds(1)
};
_renderTimer.Tick += Render;
_renderTimer.Start();
Closed += (sender, args) =>
{
_updateDataTimer?.Dispose();
_renderTimer?.Stop();
};
}
public void UpdateChart(double dto)
{
UpdateData(dto);
}
public void UpdateChart2(double dto)
{
UpdateData2(dto);
}
public void UpdateChart3(double dto)
{
UpdateData3(dto);
}
void UpdateData(double dto)
{
// "scroll" the whole chart to the left
// Array.Copy(liveData, 1, liveData, 0, liveData.Length - 1);
// place the newest data point at the end
double nextValue = dto;
nextValueIndex = (nextValueIndex < liveData.Length - 1) ? nextValueIndex + 1 : 0;
liveData[nextValueIndex] = nextValue;
vline.IsVisible = true;
vline.X = nextValueIndex;
}
void UpdateData2(double dto)
{
// "scroll" the whole chart to the left
// Array.Copy(liveData, 1, liveData, 0, liveData.Length - 1);
// place the newest data point at the end
double nextValue = dto;
nextValueIndex2 = (nextValueIndex2 < liveData2.Length - 1) ? nextValueIndex2 + 1 : 0;
liveData2[nextValueIndex2] = nextValue;
vline2.IsVisible = true;
vline2.X = nextValueIndex2;
}
void UpdateData3(double dto)
{
// "scroll" the whole chart to the left
// Array.Copy(liveData, 1, liveData, 0, liveData.Length - 1);
// place the newest data point at the end
double nextValue = dto;
nextValueIndex3 = (nextValueIndex3 < liveData3.Length - 1) ? nextValueIndex3 + 1 : 0;
liveData3[nextValueIndex3] = nextValue;
vline3.IsVisible = true;
vline3.X = nextValueIndex3;
}
void Render(object sender, EventArgs e)
{
AvaPlot1.Refresh();
AvaPlot2.Refresh();
AvaPlot3.Refresh();
}
private void InitializeComponent()
{
AvaloniaXamlLoader.Load(this);
}
protected override void OnClosing(CancelEventArgs e)
{
this.Hide();
base.OnClosing(e);
}
}