private C3DFile(Stream stream)
{
C3DReader reader = null;
try
{
reader = new C3DReader(stream);
this._processorType = reader.CreateProcessorType;
this._header = reader.ReadHeader();
this._parameterDictionary = reader.ReadParameters();
this._frameCollection = new C3DFrameCollection();
try
{
C3DParameterCache paramCache = C3DParameterCache.CreateCache(this);
C3DFrame frame = null;
while ((frame = reader.ReadNextFrame(paramCache)) != null)
{
this._frameCollection.Add(frame);
}
}
catch { }
}
finally
{
if (reader != null)
{
reader.Close();
}
}
}
private C3DFile()
{
this._processorType = C3DConstants.FILE_DEFAULT_PROCESSOR_TYPE;
this._header = new C3DHeader();
this._parameterDictionary = C3DParameterDictionary.CreateNewParameterDictionary();
this._frameCollection = new C3DFrameCollection();
}
public C3DHeader ReadHeader()
{
this._reader.BaseStream.Seek(0, SeekOrigin.Begin);
Byte[] headerData = this._reader.ReadBytes(C3DConstants.FILE_SECTION_SIZE);
C3DHeader header = new C3DHeader(this._processorType, headerData);
return(header);
}
private void LoadAnalogSamplesPerFrame(C3DHeader header, C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("ANALOG", "RATE"))
{
this._analogSamplesPerFrame = (UInt16)(Convert.ToSingle(dictionary["ANALOG", "RATE"].GetData(0)) / this._frameRate);
}
else if (header != null)
{
this._analogSamplesPerFrame = header.AnalogSamplesPerFrame;
}
else
{
this._analogSamplesPerFrame = (UInt16)(C3DConstants.DEFAULT_ANALOG_RATE / C3DConstants.DEFAULT_POINT_RATE);
}
}
private void LoadAnalogChannelCount(C3DHeader header, C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("ANALOG", "USED"))
{
this._analogChannelCount = (UInt16)Convert.ToInt16(dictionary["ANALOG", "USED"].GetData(0));
}
else if (header != null)
{
this._analogChannelCount = (UInt16)(header.AnalogSamplesPerFrame != 0 ? header.AnalogMeasurementCount / header.AnalogSamplesPerFrame : 0);
}
else
{
this._analogChannelCount = C3DConstants.DEFAULT_ANALOG_USED;
}
}
private void LoadFrameRate(C3DHeader header, C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("POINT", "RATE"))
{
this._frameRate = Convert.ToSingle(dictionary["POINT", "RATE"].GetData(0));
}
else if (header != null)
{
this._frameRate = header.FrameRate;
}
else
{
this._frameRate = C3DConstants.DEFAULT_POINT_RATE;
}
}
private void LoadFrameCount(C3DHeader header, C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("POINT", "FRAMES"))
{
this._frameCount = (UInt16)Convert.ToInt16(dictionary["POINT", "FRAMES"].GetData(0));
}
else if (header != null)
{
this._frameCount = (UInt16)(header.LastFrameIndex - header.FirstFrameIndex + 1);
}
else
{
this._frameCount = C3DConstants.DEFAULT_POINT_LAST_FRAME - C3DConstants.DEFAULT_POINT_FIRST_FRAME + 1;
}
}
private void LoadScaleFactor(C3DHeader header, C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("POINT", "SCALE"))
{
this._scaleFactor = Convert.ToSingle(dictionary["POINT", "SCALE"].GetData(0));
}
else if (header != null)
{
this._scaleFactor = header.ScaleFactor;
}
else
{
this._scaleFactor = C3DConstants.DEFAULT_POINT_SCALE;
}
}
private void LoadPointCount(C3DHeader header, C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("POINT", "USED"))
{
this._pointCount = (UInt16)Convert.ToInt16(dictionary["POINT", "USED"].GetData(0));
}
else if (header != null)
{
this._pointCount = header.PointCount;
}
else
{
this._pointCount = C3DConstants.DEFAULT_POINT_USED;
}
}
/// <summary>
/// 初始化取参数缓存信息
/// </summary>
/// <param name="header">C3D文件头</param>
/// <param name="dictionary">C3D参数字典</param>
private C3DParameterCache(C3DHeader header, C3DParameterDictionary dictionary)
{
this.LoadFirstDataBlockPosition(header, dictionary);
this.LoadPointCount(header, dictionary);
this.LoadScaleFactor(header, dictionary);
this.LoadFrameCount(header, dictionary);
this.LoadFrameRate(header, dictionary);
this.LoadAnalogChannelCount(header, dictionary);
this.LoadAnalogSamplesPerFrame(header, dictionary);
this.LoadAnalogGeneralScale(dictionary);
this.LoadAnalogChannelScale(dictionary);
this.LoadAnalogZeroOffset(dictionary);
}
private void LoadFirstDataBlockPosition(C3DHeader header, C3DParameterDictionary dictionary)
{
this._firstDataBlockPosition = 0;
if (dictionary != null && dictionary.ContainsParameter("POINT", "DATA_START"))
{
this._firstDataBlockPosition = ((UInt16)Convert.ToInt16(dictionary["POINT", "DATA_START"].GetData(0)) - 1) * C3DConstants.FILE_SECTION_SIZE;
}
if (header != null && this._firstDataBlockPosition <= 0)
{
this._firstDataBlockPosition = (header.FirstDataSectionID - 1) * C3DConstants.FILE_SECTION_SIZE;
}
if (this._firstDataBlockPosition <= 0)
{
this._firstDataBlockPosition = (C3DConstants.FILE_DEFAULT_FIRST_PARAM_SECTION - 1) * C3DConstants.FILE_SECTION_SIZE;
}
}
/// <summary>
/// 从C3D文件头和参数字典中创建参数缓存
/// </summary>
/// <param name="header">C3D文件头</param>
/// <param name="dictionary">C3D参数字典</param>
public static C3DParameterCache CreateCache(C3DHeader header, C3DParameterDictionary dictionary)
{
return(new C3DParameterCache(header, dictionary));
}
/// <summary>
/// 从C3D文件头中创建参数缓存
/// </summary>
/// <param name="header">C3D文件头</param>
public static C3DParameterCache CreateCache(C3DHeader header)
{
return(new C3DParameterCache(header, null));
}
private void WriteHeader(C3DHeader header)
{
this._writer.Seek(0, SeekOrigin.Begin);
this._writer.Write(header.ToArray());
}
