/// <summary>
/// 根据采样个数获取对应位置
/// </summary>
/// <param name="sampleCount">采样点个数</param>
/// <param name="isReviseValue">是否进行偏移</param>
/// <returns>采样点的位置</returns>
public long GetAppointEndPostion(int sampleCount)
{
long endPos = 0;
if (File.Exists(_citFilePath))
{
//int sampleCount = GetScrollValueToSampleNum(scrollValue);
long[] postions = CitFileProcess.GetPositons(_citFilePath);
//int sampleNum = GetScrollValueToSampleNum(scrollValue);
if (LayerConfig.IsReverse)
{
if (sampleCount == 0)
{
endPos = postions[1];
}
else
{
endPos = CitFileProcess.GetAppointEndPostion(_citFilePath, postions[1], sampleCount * -1);
}
}
else
{
if (sampleCount == 0)
{
endPos = postions[0];
}
else
{
endPos = CitFileProcess.GetAppointEndPostion(_citFilePath, postions[0], sampleCount);
}
}
//if (isReviseValue)
//{
// if (LayerConfig.IsReverse)
// {
// endPos -= ReviseValue * _citFile.iChannelNumber * 2;
// }
// else
// {
// endPos += ReviseValue * _citFile.iChannelNumber * 2;
// }
//}
}
return(endPos);
}
public List <Milestone> GetRangeMileage(int totalSmapleCount)
{
List <Milestone> rangeMileage = new List <Milestone>(WaveformDataCount);
long endPostion = -1;
long[] postions = CitFileProcess.GetPositons(_citFilePath);
long postion = CitFileProcess.GetAppointEndPostion(CitFilePath, postions[0], totalSmapleCount);
rangeMileage = CitFileProcess.GetMileStoneByRange(CitFilePath, postion, WaveformDataCount, ref endPostion);
if (IsLoadIndex)
{
if (MileageFix.FixData.Count > 0)
{
rangeMileage = MileageFix.GetMileageReviseData(rangeMileage);
}
else
{
IsLoadIndex = false;
}
}
return(rangeMileage);
}
/// <summary>
/// 根据采样点获取目标点
/// </summary>
/// <param name="sampleCount"></param>
/// <returns></returns>
public long GetPostionBySamapleCount(int sampleCount)
{
long[] postion = CitFileProcess.GetPositons(_citFilePath);
return(CitFileProcess.GetAppointEndPostion(_citFilePath, postion[0], sampleCount));
}
/// <summary>
/// 根据起始位置加载波形数据
/// </summary>
/// <param name="startPostion">起始点</param>
public void GetWaveformData(long startPostion)
{
if (File.Exists(_citFilePath))
{
long endPos = 0;
long startPos = 0;
long realStartPos = 0;
long[] postions = CitFileProcess.GetPositons(_citFilePath);
startPos = startPostion;
if (LayerConfig.IsReverse)
{
startPos -= ReviseValue * _citFile.iChannelNumber * 2;
}
else
{
startPos += ReviseValue * _citFile.iChannelNumber * 2;
}
realStartPos = startPos;
int pointCount = 0;
if (startPos < postions[0])
{
while (startPos < postions[0] && pointCount < WaveformDataCount)
{
startPos += _citFile.iChannelNumber * 2;
pointCount++;
}
pointCount = WaveformDataCount - pointCount;
}
else if (startPos > postions[1])
{
while (startPos > postions[1] && pointCount < WaveformDataCount)
{
startPos -= _citFile.iChannelNumber * 2;
pointCount++;
}
pointCount = WaveformDataCount - pointCount;
}
else
{
pointCount = WaveformDataCount;
}
if (LayerConfig.IsReverse)
{
pointCount = pointCount * -1;
}
CurrentPostion = startPos;
endPos = CitFileProcess.GetAppointEndPostion(_citFilePath, startPos, pointCount);
List <double[]> data = null;
if (LayerConfig.IsReverse)
{
data = CitFileProcess.GetAllChannelDataInRange(_citFilePath, endPos, startPos);
MileList.milestoneList = CitFileProcess.GetMileStoneByRange(_citFilePath, endPos, startPos);
}
else
{
data = CitFileProcess.GetAllChannelDataInRange(_citFilePath, startPos, endPos);
MileList.milestoneList = CitFileProcess.GetMileStoneByRange(_citFilePath, startPos, endPos);
}
if (IsLoadIndex)
{
MileList.milestoneList = MileageFix.GetMileageReviseData(MileList.milestoneList);
}
data.RemoveAt(0);
data.RemoveAt(0);
if (ChannelList.Count > 0)
{
for (int i = 0; i < data.Count; i++)
{
if (ChannelList.Count > i)
{
ChannelList[i].Data = new double[WaveformDataCount];
if (data[i].Length < WaveformDataCount)
{
double[] temp = new double[data[i].Length];
Array.Copy(data[i], temp, data[i].Length);
data[i] = new double[WaveformDataCount];
if (realStartPos < postions[0])
{
Array.Copy(temp, 0, data[i], WaveformDataCount - temp.Length, temp.Length);
}
else
{
Array.Copy(temp, data[i], temp.Length);
}
}
if (LayerConfig.IsReverse)
{
Array.Reverse(data[i]);
}
Array.Copy(data[i], ChannelList[i].Data, WaveformDataCount);
}
else
{
break;
}
}
if (MileList.milestoneList.Count < WaveformDataCount)
{
int count = WaveformDataCount - MileList.milestoneList.Count;
for (int i = 0; i < count; i++)
{
if (realStartPos < postions[0])
{
MileList.milestoneList.Insert(0, new Milestone()
{
mKm = 0, mMeter = 0
});
}
else
{
MileList.milestoneList.Add(new Milestone()
{
mKm = 0, mMeter = 0
});
}
}
}
if (LayerConfig.IsReverse)
{
MileList.milestoneList.Reverse();
}
}
}
else
{
throw new InvalidDataException("CIT文件路径无效或为空！");
}
}