public override byte[] Serialize(ushort protocolVersion, Polygon value)
{
var totalRingsLength = value.Rings.Sum(r => 4 + r.Count * 16);
var buffer = new byte[9 + totalRingsLength];
var isLittleEndian = UseLittleEndianSerialization();
buffer[0] = isLittleEndian ? (byte)1 : (byte)0;
var offset = 1;
EndianBitConverter.SetBytes(isLittleEndian, buffer, offset, (int)GeometryType.Polygon);
offset += 4;
EndianBitConverter.SetBytes(isLittleEndian, buffer, offset, value.Rings.Count);
offset += 4;
foreach (var ring in value.Rings)
{
EndianBitConverter.SetBytes(isLittleEndian, buffer, offset, ring.Count);
offset += 4;
foreach (var point in ring)
{
EndianBitConverter.SetBytes(isLittleEndian, buffer, offset, point.X);
EndianBitConverter.SetBytes(isLittleEndian, buffer, offset + 8, point.Y);
offset += 16;
}
}
return(buffer);
}
private static int WriteDateRangeBound(byte[] buffer, int offset, DateRangeBound value)
{
var millis = Convert.ToInt64(Math.Floor((value.Timestamp - UnixStart).TotalMilliseconds));
EndianBitConverter.SetBytes(false, buffer, offset, millis);
buffer[offset + 8] = (byte)value.Precision;
return(offset + 9);
}
private static int WriteDateRangeBound(byte[] buffer, int offset, DateRangeBound value)
{
var ticksDiff = value.Timestamp.Ticks - UnixStart.Ticks;
var millisecondsDiff = ticksDiff / (decimal)TimeSpan.TicksPerMillisecond;
var millis = Convert.ToInt64(Math.Floor(millisecondsDiff));
EndianBitConverter.SetBytes(false, buffer, offset, millis);
buffer[offset + 8] = (byte)value.Precision;
return(offset + 9);
}
public override byte[] Serialize(ushort protocolVersion, Point value)
{
var buffer = new byte[21];
var isLittleEndian = UseLittleEndianSerialization();
buffer[0] = isLittleEndian ? (byte)1 : (byte)0;
EndianBitConverter.SetBytes(isLittleEndian, buffer, 1, (int)GeometryType.Point2D);
EndianBitConverter.SetBytes(isLittleEndian, buffer, 5, value.X);
EndianBitConverter.SetBytes(isLittleEndian, buffer, 13, value.Y);
return(buffer);
}
public override byte[] Serialize(ushort protocolVersion, LineString value)
{
var buffer = new byte[9 + value.Points.Count * 16];
var isLittleEndian = UseLittleEndianSerialization();
buffer[0] = isLittleEndian ? (byte)1 : (byte)0;
var offset = 1;
EndianBitConverter.SetBytes(isLittleEndian, buffer, offset, (int)GeometryType.LineString);
offset += 4;
EndianBitConverter.SetBytes(isLittleEndian, buffer, offset, value.Points.Count);
offset += 4;
foreach (var point in value.Points)
{
EndianBitConverter.SetBytes(isLittleEndian, buffer, offset, point.X);
EndianBitConverter.SetBytes(isLittleEndian, buffer, offset + 8, point.Y);
offset += 16;
}
return(buffer);
}
public void ToDouble_SetBytes_Test()
{
var values = new[]
{
Tuple.Create(0D, new byte[] { 0, 0, 0, 0, 0, 0, 0, 0 }),
Tuple.Create(-1D, new byte[] { 0xbf, 0xf0, 0, 0, 0, 0, 0, 0 }),
Tuple.Create(-2D, new byte[] { 0xc0, 0, 0, 0, 0, 0, 0, 0 }),
Tuple.Create(-2.3D, new byte[] { 0xc0, 0x02, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66 }),
Tuple.Create(10.3112277778D, new byte[] { 0x40, 0x24, 0x9f, 0x59, 0x3f, 0x4e, 0x83, 0xf8 })
};
foreach (var v in values)
{
var buffer = new byte[8];
EndianBitConverter.SetBytes(false, buffer, 0, v.Item1);
CollectionAssert.AreEqual(v.Item2, buffer);
EndianBitConverter.SetBytes(true, buffer, 0, v.Item1);
CollectionAssert.AreEqual(v.Item2.Reverse(), buffer);
var decoded = EndianBitConverter.ToDouble(false, v.Item2, 0);
Assert.AreEqual(v.Item1, decoded);
decoded = EndianBitConverter.ToDouble(true, v.Item2.Reverse().ToArray(), 0);
Assert.AreEqual(v.Item1, decoded);
}
}
public void ToInt32_SetBytes_Test()
{
var values = new[]
{
Tuple.Create(0, new byte[] { 0, 0, 0, 0 }),
Tuple.Create(-1, new byte[] { 0xff, 0xff, 0xff, 0xff }),
Tuple.Create(-2, new byte[] { 0xff, 0xff, 0xff, 0xfe }),
Tuple.Create(-5661, new byte[] { 0xff, 0xff, 0xe9, 0xe3 }),
Tuple.Create(0x7fffffff, new byte[] { 0x7f, 0xff, 0xff, 0xff })
};
foreach (var v in values)
{
var buffer = new byte[4];
EndianBitConverter.SetBytes(false, buffer, 0, v.Item1);
CollectionAssert.AreEqual(v.Item2, buffer);
EndianBitConverter.SetBytes(true, buffer, 0, v.Item1);
CollectionAssert.AreEqual(v.Item2.Reverse(), buffer);
var decoded = EndianBitConverter.ToInt32(false, v.Item2, 0);
Assert.AreEqual(v.Item1, decoded);
decoded = EndianBitConverter.ToInt32(true, v.Item2.Reverse().ToArray(), 0);
Assert.AreEqual(v.Item1, decoded);
}
}
