/// <summary>
/// 根据里程信息获取采样值，换算为采样点个数，同时获取坐标位置
/// </summary>
/// <param name="mileage">里程，单位为米</param>
/// <param name="locationPostion"></param>
/// <returns>采样点个数</returns>
public long GetLocationSampleCount(float mileage, ref long locationPostion)
{
if (IsLoadIndex)
{
//if (CitFile.iKmInc == 0)
//{
// Milestone stone= MileageFix.CalcMilestoneByFixedMilestone(mileage);
// //Milestone stone = _allStone.FindLast(p => p.GetMeter() <= mileage);
// if (stone != null)
// {
// locationPostion = stone.mFilePosition;
// }
// else
// {
// locationPostion = -1;
// }
//}
//else
//{
// //Milestone stone = _allStone.FindLast(p => p.GetMeter() >= mileage);
// long postion = CitFileProcess.GetCurrentPositionByMilestone(_citFilePath, mileage, true);
// if (postion != -1)
// {
// locationPostion = postion;
// }
// else
// {
// locationPostion = -1;
// }
//}
Milestone stone = MileageFix.CalcMilestoneByFixedMilestone(mileage);
if (stone != null)
{
locationPostion = stone.mFilePosition;
}
else
{
locationPostion = -1;
}
}
else
{
locationPostion = CitFileProcess.GetCurrentPositionByMilestone(_citFilePath, mileage, true);
}
if (locationPostion != -1)
{
return(GetLocationSampleCount(locationPostion));
}
return(-1);
}
/// <summary>
/// 导出CIT文件
/// </summary>
/// <param name="filePath">文件路径</param>
/// <param name="filePath">导出路径</param>
/// <param name="startMileage">起始里程(单位：米)</param>
/// <param name="endMileage">结束里程(单位：米)</param>
/// <returns></returns>
public string ExportOnlyCITFile(string filePath, double startMileage, double endMileage)
{
try
{
if (_citFile != null)
{
long startPostion = -1;
long endPostion = -1;
startPostion = CitFileProcess.GetCurrentPositionByMilestone(_citFilePath, (float)startMileage, true);
endPostion = CitFileProcess.GetCurrentPositionByMilestone(_citFilePath, (float)endMileage, true);
if (startPostion == -1 || endPostion == -1)
{
return("");
}
if (CitFileProcess.WriteCitFile(filePath, _citFile, CitFileProcess.GetChannelDefinitionList(_citFilePath), ""))
{
if (startPostion > endPostion)
{
long temp = startPostion;
startPostion = endPostion;
endPostion = temp;
}
long sampleCount = CitFileProcess.GetSampleCountByRange(_citFilePath, startPostion, endPostion);
int sampleNumber = 5000;
if (sampleCount > sampleNumber)
{
long pageCount = (sampleCount / sampleNumber);
long pageEndPostion = 0;
for (int i = 0; i < pageCount; i++)
{
List <double[]> channelData = CitFileProcess.GetAllChannelDataInRange(_citFilePath, startPostion, sampleNumber, ref pageEndPostion);
startPostion = pageEndPostion;
CitFileProcess.WriteCitChannelData(filePath, channelData);
}
if (pageEndPostion < endPostion)
{
List <double[]> channelData = CitFileProcess.GetAllChannelDataInRange(_citFilePath, startPostion, endPostion);
CitFileProcess.WriteCitChannelData(filePath, channelData);
}
}
else
{
List <double[]> channelData = CitFileProcess.GetAllChannelDataInRange(_citFilePath, startPostion, endPostion);
CitFileProcess.WriteCitChannelData(filePath, channelData);
}
if (CitFileProcess.SetKmFrom(filePath, (float)startMileage / 1000) &&
CitFileProcess.SetKmTo(filePath, (float)endMileage / 1000))
{
return(filePath);
}
}
}
return(string.Empty);
}
catch (Exception ex)
{
throw ex;
}
}