static WknMultiLineString ParseMultiLineString(byte[] wkb, ref int pos)
{
if (wkb[pos] != 1)
{
throw new Exception("Sorry, only Little Endian format is supported");
}
var type = BitConverter.ToUInt32(wkb, pos + 1);
if (type != (uint)WknGeometryType.WknMultiLineString)
{
throw new Exception("Invalid object type");
}
var nbLineStrings = BitConverter.ToUInt32(wkb, pos + 5);
pos += 9;
var lineStrings = new WknLineString[nbLineStrings];
for (var i = 0; i < nbLineStrings; ++i)
{
lineStrings[i] = ParseLineString(wkb, ref pos);
}
return(new WknMultiLineString(lineStrings));
}
static void AppendLineString(BinaryWriter wrt, WknLineString lineString)
{
wrt.Write(LittleEndian);
wrt.Write((uint)WknGeometryType.WknLineString);
wrt.Write((uint)lineString.Points.Length);
for (var i = 0; i < lineString.Points.Length; ++i)
{
var p = lineString.Points[i];
wrt.Write(p.X);
wrt.Write(p.Y);
}
}