public static async Task Write(this Stream stream, Types.RecordHeader header, int count = 1)
{
stream.Write((byte)WkbByteOrder.BigEndian);
var type = header.Type switch
{
ShapeTypes.Point => WkbShapeTypes.Point,
ShapeTypes.Polyline => count == 1 ? WkbShapeTypes.LineString : WkbShapeTypes.MultiLineString,
ShapeTypes.Polygon => WkbShapeTypes.Polygon,
ShapeTypes.MultiPoint => WkbShapeTypes.MultiPoint,
_ => throw new NotSupportedException($"Shape type '{header.Type}' is not supported yet!")
};
await stream.Write((uint)type);
}
public static async Task <Records.MultiPointRecord> ReadMultiPointRecord(this Stream stream, Types.RecordHeader header)
=> new Records.MultiPointRecord
{
Header = header,
BoundingBox = await stream.ReadBox(),
Points = await stream.ReadPoints()
};
public static async Task <Records.PolygonRecord> ReadPolygonRecord(this Stream stream, Types.RecordHeader header)
{
var box = await stream.ReadBox();
var parts = await stream.ReadInt(false);
var points = await stream.ReadInt(false);
return(new Records.PolygonRecord
{
Header = header,
BoundingBox = box,
Parts = await stream.ReadIntArray(parts),
Points = await stream.ReadPoints(points)
});
}
public static async Task <Records.PointRecord> ReadPointRecord(this Stream stream, Types.RecordHeader header)
=> new Records.PointRecord
{
Header = header,
X = await stream.ReadDouble(),
Y = await stream.ReadDouble()
};
