/// <summary>
/// シーケンスの要素を一つ読みだして、読み出しポインタを次へ1つ移動させる
/// </summary>
/// <param name="elem"></param>
/// <param name="reader"></param>
#else
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="elem"></param>
/// <param name="reader"></param>
#endif
public static void REV_READ_SEQ_ELEM <T>(out T elem, CvSeqReader reader) where T : struct
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
//Type t = typeof(t);
//if (t.IsValueType)
{
using (StructurePointer <T> elemPtr = new StructurePointer <T>())
{
if (reader.Seq.ElemSize != elemPtr.Size)
{
throw new OpenCvSharpException();
}
Util.CopyMemory(elemPtr.Ptr, reader.Ptr, elemPtr.Size);
PREV_SEQ_ELEM(elemPtr.Size, reader);
elem = elemPtr.ToStructure();
}
}
/*
* else
* {
* IntPtr elemPtr;
* REV_READ_SEQ_ELEM<IntPtr>(out elemPtr, reader);
* elem = Util.ToObject<t>(elemPtr);
* }
* //*/
}
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="elem"></param>
/// <param name="writer"></param>
#else
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="elem"></param>
/// <param name="writer"></param>
#endif
public static void WRITE_SEQ_ELEM <T>(T elem, CvSeqWriter writer) where T : struct
{
int size = Marshal.SizeOf(typeof(T));
if (writer.Seq.ElemSize != size)
{
throw new OpenCvSharpException();
}
if (writer.Ptr.ToInt64() >= writer.BlockMax.ToInt64())
{
NativeMethods.cvCreateSeqBlock(writer.CvPtr);
}
if (writer.Ptr.ToInt64() > writer.BlockMax.ToInt64() - size)
{
throw new OpenCvSharpException();
}
using (var elemPtr = new StructurePointer <T>(elem))
{
Util.CopyMemory(writer.Ptr, elemPtr, size);
}
writer.Ptr = new IntPtr(writer.Ptr.ToInt64() + size);
}
/// <summary>
/// 指定したインデックスの配列の要素を設定する
/// </summary>
/// <param name="index">配列のインデックス</param>
/// <param name="value">割り当てる値</param>
#else
/// <summary>
/// Change the particular array element
/// </summary>
/// <param name="index">zero-based component of the element index </param>
/// <param name="value">The assigned value </param>
#endif
public void Set(int index, T value)
{
using (StructurePointer <T> src = new StructurePointer <T>(value))
{
IntPtr dst = new IntPtr(_ptr.ToInt64() + (_size * index));
Util.CopyMemory(dst, src, _size);
}
}
