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mseedChart
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添加实时数据功能

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master
mzhifa 2 years ago
parent b159dcad47
commit 1fcae94da6
2 changed files with 145 additions and 27 deletions
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119
mseedChart.MainModule/ViewModels/ChartPlotViewModel.cs
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@ -31,6 +31,7 @@ using System.Windows.Markup;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Threading;
using System.Xml.Linq;
namespace mseedChart.MainModule.ViewModels
{
@ -72,7 +73,7 @@ namespace mseedChart.MainModule.ViewModels
public int CurPoints;
int _channelCount = 0;
double _samplingFrequency = 500; // 采样频率 (Hz).
int _samplingFrequency = 500; // 采样频率 (Hz).
WavesModel _wavesModel;
private int _lChartCount = 1;
public ConcurrentQueue<StationModel> smList;
@ -200,6 +201,8 @@ namespace mseedChart.MainModule.ViewModels
public DelegateCommand<object> YasixZENVisibleCommand => new DelegateCommand<object>(YasixZENVisible);
public DelegateCommand IntervalSureCommand => new DelegateCommand(IntervalSure);
public DelegateCommand<object> RealTimeDataCommand => new DelegateCommand<object>(RealTimeData);
private void AxesYVisible(object isCheck)
{
if (_lChartAll != null)
@ -370,6 +373,33 @@ namespace mseedChart.MainModule.ViewModels
_lChartAll.EndUpdate();
}
}
private void RealTimeData(object isCheck)
{
if (_lChartAll != null)
{
bool yAxesVisible = ((bool)isCheck == true);
_lChartAll.BeginUpdate();
if (yAxesVisible)
{
//Set real-time monitoring automatic old data destruction
LChartALL.ViewXY.DropOldSeriesData = true;
_pointsAppended = LChartALL.ViewXY.XAxes[0].Minimum;
CompositionTarget.Rendering -= CompositionTarget_Rendering;
CompositionTarget.Rendering += CompositionTarget_Rendering;
LChartALL.ViewXY.XAxes[0].ScrollMode = XAxisScrollMode.Scrolling;
}
else
{
LChartALL.ViewXY.XAxes[0].ScrollMode = XAxisScrollMode.None;
CompositionTarget.Rendering -= CompositionTarget_Rendering;
}
_lChartAll.EndUpdate();
}
}
#endregion
public List<StationModel> UpdateWavesFromTxt(string fn)
{
@ -663,6 +693,7 @@ namespace mseedChart.MainModule.ViewModels
multiChannelData[channelIndex * 3 + 1] = smList.ElementAt(channelIndex).dn.ToArray();
multiChannelData[channelIndex * 3 + 2] = smList.ElementAt(channelIndex).de.ToArray();
}
_data = multiChannelData;
// Invoke FeedNewDataToChart.
_dispatcher.Invoke(() =>
{
@ -725,5 +756,91 @@ namespace mseedChart.MainModule.ViewModels
}
#region 实时数据
private void CompositionTarget_Rendering(object sender, EventArgs e)
{
RenderNextFrame();
}
private void RenderNextFrame()
{
if (_lChartAll == null)
{
return;
}
_dispatcher.Invoke(() =>
{
FeedData(/*chartTitleText*/);
});
}
int _iRound = 0;
double _pointsAppended = 0;
double[][] _data;
int PreGenerateDataForRoundCount = 6;
private void FeedData(/*string chartTitleText*/)
{
if (_lChartAll != null)
{
_lChartAll.BeginUpdate();
//Append data to series
System.Threading.Tasks.Parallel.For(0, _channelCount, (seriesIndex) =>
{
double[] thisSeriesData = _data[seriesIndex];
double[] dataToAppendNow = new double[_samplingFrequency];
Array.Copy(thisSeriesData, (_iRound % PreGenerateDataForRoundCount) * _samplingFrequency, dataToAppendNow, 0, _samplingFrequency);
_lChartAll.ViewXY.SampleDataSeries[seriesIndex].AddSamples(dataToAppendNow, false);
System.Diagnostics.Debug.WriteLine("***********index:{0}, pointCount:{1},time:{2}", seriesIndex,
_lChartAll.ViewXY.SampleDataSeries[seriesIndex].PointCount, DateTime.Now);
});
_pointsAppended += 1;
//Set X axis real-time scrolling position
double lastX = _pointsAppended;
_lChartAll.ViewXY.XAxes[0].ScrollPosition = lastX;
//Update sweep bands
if (_lChartAll.ViewXY.XAxes[0].ScrollMode == XAxisScrollMode.Sweeping)
{
//Dark band of old page fading away
double pageLen = _lChartAll.ViewXY.XAxes[0].Maximum - _lChartAll.ViewXY.XAxes[0].Minimum;
double sweepGapWidth = pageLen / 20.0;
_lChartAll.ViewXY.Bands[0].SetValues(lastX - pageLen, lastX - pageLen + sweepGapWidth);
if (_lChartAll.ViewXY.Bands[0].Visible == false)
{
_lChartAll.ViewXY.Bands[0].Visible = true;
}
//Bright new page band
_lChartAll.ViewXY.Bands[1].SetValues(lastX - sweepGapWidth / 6, lastX);
if (_lChartAll.ViewXY.Bands[1].Visible == false)
{
_lChartAll.ViewXY.Bands[1].Visible = true;
}
}
else
{
//Hide sweeping bands if not in sweeping mode
//if (_lChartAll.ViewXY.Bands[0].Visible == true)
//{
// _lChartAll.ViewXY.Bands[0].Visible = false;
//}
//if (_lChartAll.ViewXY.Bands[1].Visible == true)
//{
// _lChartAll.ViewXY.Bands[1].Visible = false;
//}
}
_lChartAll.EndUpdate();
_iRound++;
}
}
#endregion
}
}

1
mseedChart.MainModule/Views/ChartPlotView.xaml
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@ -27,6 +27,7 @@
<TextBlock VerticalAlignment="Center">X轴时间间隔:</TextBlock>
<TextBox Text="{Binding XaisInterval}" Width="80" VerticalAlignment="Center"></TextBox>
<Button Grid.Column="1" Grid.Row="1" Command="{Binding IntervalSureCommand}" Margin="20,0,50,0" Background="#FF66B1FF" HorizontalAlignment="Right" Width="60">OK</Button>
<CheckBox Command="{Binding RealTimeDataCommand}" CommandParameter="{Binding RelativeSource={RelativeSource Mode=Self},Path=IsChecked}" Content="实时数据" VerticalContentAlignment="Center" FontSize="15" Foreground="Black" FontWeight="Bold" DockPanel.Dock="Right"></CheckBox>
<CheckBox IsChecked="{Binding IsMultFiles}" Content="MultFiles" VerticalContentAlignment="Center" FontSize="15" Foreground="Black" FontWeight="Bold" DockPanel.Dock="Right"></CheckBox>
<Button Grid.Column="1" Grid.Row="1" Command="{Binding FileSelectorCommand}" Margin="0,0,50,0" Background="#FF66B1FF" HorizontalAlignment="Right" Width="60">Open</Button>
</DockPanel>

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