public override byte[] ToWellKnownBinary()
{
/// 0103000000 01000000 03000000 BF9EAF592E1BDBBF 6F445AD726844A40 BF9EAF592E1BDBBF
/// 00000001 - number of rings
/// 00000003 - number of points in ring
/// BF9EAF592E1BDBBF - point 1
/// 6F445AD726844A40 - point 2
/// BF9EAF592E1BDBBF - point 3
int numberOfRings = Rings.Count();
int numberOfPoints = Rings.Sum(x => x.Points.Count());
WellKnownBinary wkb = WellKnownBinary.Allocate(GeometryType.Polygon, 9 + (numberOfRings * 4) + (numberOfPoints * 8));
wkb.AddRange(BitConverter.GetBytes(numberOfRings));
foreach (var ring in Rings)
{
wkb.AddRange(BitConverter.GetBytes(ring.Points.Count()));
foreach (var point in ring.Points)
{
wkb.AddRange(BitConverter.GetBytes(point.Longitude));
wkb.AddRange(BitConverter.GetBytes(point.Latitude));
}
}
return(wkb.ToArray());
}
public override byte[] ToWellKnownBinary()
{
/// 0101000000 BF9EAF592E1BDBBF 6F445AD726844A40
/// BF9EAF592E1BDBBF - longitude
/// 6F445AD726844A40 - latitude
WellKnownBinary wkb = WellKnownBinary.Allocate(GeometryType.Point, 21);
wkb.AddRange(BitConverter.GetBytes(Longitude));
wkb.AddRange(BitConverter.GetBytes(Latitude));
return(wkb.ToArray());
}
public override byte[] ToWellKnownBinary()
{
/// 0102000000 03000000 BF9EAF592E1BDBBF 6F445AD726844A40 BF9EAF592E1BDBBF
/// 03000000 - number of points
/// BF9EAF592E1BDBBF - point 1
/// 6F445AD726844A40 - point 2
/// BF9EAF592E1BDBBF - point 3
int numberOfPoints = Points.Count();
WellKnownBinary wkb = WellKnownBinary.Allocate(GeometryType.LineString, 9 + (numberOfPoints * 8));
wkb.AddRange(BitConverter.GetBytes(numberOfPoints));
foreach (var point in Points)
{
wkb.AddRange(BitConverter.GetBytes(point.Longitude));
wkb.AddRange(BitConverter.GetBytes(point.Latitude));
}
return(wkb.ToArray());
}
/// <summary>
/// Creates a well-known binary buffer, pre-populated with the byte order and geometry type
/// </summary>
/// <param name="geometryType">Geometry type to write into the buffer</param>
/// <param name="capacity">The number of bytes that the new instance can initially store</param>
/// <returns>A WellKnownBinary instance, pre-populated with the byte order and geometry type</returns>
public static WellKnownBinary Allocate(GeometryType geometryType, int capacity)
{
/// 01 - refers to the byte order; 0x01 is for little endian
/// 01000000 - geometry type; 0x01 is a Point
///
WellKnownBinary wkb = new WellKnownBinary(capacity);
wkb.Add(BitConverter.IsLittleEndian ? LittleEndian : BigEndian);
wkb.AddRange(BitConverter.GetBytes((int)geometryType));
return(wkb);
}
