public override bool FillYPlotDatas(int beginXIndex, int endXIndex, bool forceRefresh, int seriesIndex, int newSparseRatio, int plotCount)
{
// 如果不需要强制更新，且当前起始位置等于上次起始位置、当前结束位置小于等于上次结束位置、新的SparseRatio等于上次的SpaseRatio时无需更新数据。
if (!forceRefresh && LastYStartIndex[seriesIndex] == beginXIndex && LastYEndIndex[seriesIndex] >= endXIndex &&
SparseRatio[seriesIndex] == newSparseRatio)
{
return(false);
}
LastYStartIndex[seriesIndex] = beginXIndex;
LastYEndIndex[seriesIndex] = endXIndex;
SparseRatio[seriesIndex] = newSparseRatio;
if (1 == newSparseRatio)
{
ParallelHandler.FillNoneFitPlotData(beginXIndex, SparseRatio[seriesIndex], _yBuffers[seriesIndex],
_plotBuffer.YPlotBuffer[seriesIndex], plotCount);
}
else
{
switch (ParentManager.FitType)
{
case StripChartX.FitType.None:
ParallelHandler.FillNoneFitPlotData(beginXIndex, SparseRatio[seriesIndex], _yBuffers[seriesIndex],
_plotBuffer.YPlotBuffer[seriesIndex], plotCount);
break;
case StripChartX.FitType.Range:
ParallelHandler.FillRangeFitPlotData <TDataType>(beginXIndex, SparseRatio[seriesIndex], _yBuffers[seriesIndex],
_plotBuffer.YPlotBuffer[seriesIndex], plotCount);
break;
}
}
return(true);
}
public DataEntity(DataCheckParameters dataCheckParams)
{
DataInfo = new DataEntityInfo();
PlotBuf = new PlotBuffer(this);
_transBuf = null;
_dataCheckParams = dataCheckParams;
Parallel = new ParallelHandler(this, dataCheckParams);
}
protected PlotAction(StripPlotter plotter, AxisViewAdapter axisViewAdapter)
{
this.Plotter = plotter;
this.PlotSeries = plotter.PlotSeries;
this.SamplesInChart = 0;
this.SparseRatio = 1;
this.AxisViewAdapter = axisViewAdapter;
this.Parallel = new ParallelHandler(this);
_maxYValue = double.MinValue;
_minYValue = double.MaxValue;
this.YWrapBufs = new List <OverLapWrapBuffer <double> >(Constants.MaxSeriesToDraw);
}
/// <summary>
/// Create a new instance of CircularQueue
/// </summary>
/// <param name="capacity">The maximum count of data can be stored in queue. An overflow exception will be raised when the count of queue data exceeed this value</param>
public CircularQueue(int capacity)
{
const int defaultCapacity = 1024;
if (capacity <= 0) //输入的size无效，创建默认大小的缓冲区
{
capacity = defaultCapacity;
}
_capacity = capacity;
_dataTypeSize = Marshal.SizeOf(typeof(TDataType));
_dataBuffer = new TDataType[_capacity];
_startIndex = 0;
_endIndex = 0;
_dataCount = 0;
_queueLock = new SpinLock();
_propertyReadTimeout = -1;
_autoLock = AutoLockValue;
BlockWait = true;
_parallel = new ParallelHandler <TDataType>(_dataBuffer);
}
protected DataEntityBase(PlotManager plotManager, DataEntityInfo dataInfo)
{
this.ParentManager = plotManager;
this.FitType = plotManager.FitType;
this.DataInfo = dataInfo;
this.ParallelHandler = new ParallelHandler(ParentManager.DataCheckParams);
_lastXStart = int.MinValue;
_lastXEnd = int.MinValue;
_lastXSparseRatio = int.MinValue;
LastYStartIndex = new int[DataInfo.LineCount];
LastYEndIndex = new int[DataInfo.LineCount];
SparseRatio = new int[DataInfo.LineCount];
_maxYValues = new double[DataInfo.LineCount];
_minYValues = new double[DataInfo.LineCount];
for (int i = 0; i < DataInfo.LineCount; i++)
{
LastYStartIndex[i] = int.MinValue;
LastYEndIndex[i] = int.MinValue;
SparseRatio[i] = int.MaxValue;
_maxYValues[i] = double.MinValue;
_minYValues[i] = double.MaxValue;
}
}
