/// <summary>
/// Convert a chain code contour to a polygon.
/// </summary>
/// <returns>A polygon.</returns>
public CvContourPolygon ConvertToPolygon()
{
CvContourPolygon contour = new CvContourPolygon();
int x = StartingPoint.X;
int y = StartingPoint.Y;
contour.Add(new CvPoint(x, y));
if (ChainCode.Count > 0)
{
CvChainCode lastCode = ChainCode[0];
x += CvBlobConst.ChainCodeMoves[(int)ChainCode[0]][0];
y += CvBlobConst.ChainCodeMoves[(int)ChainCode[0]][1];
for (int i = 1; i < ChainCode.Count; i++)
{
if (lastCode != ChainCode[i])
{
contour.Add(new CvPoint(x, y));
lastCode = ChainCode[i];
}
x += CvBlobConst.ChainCodeMoves[(int)ChainCode[i]][0];
y += CvBlobConst.ChainCodeMoves[(int)ChainCode[i]][1];
}
}
return(contour);
}
public static extern void CvChainCodes_PushBack(IntPtr obj, CvChainCode item);
