public static PolygonBag2 <double> ToGeom(PostgisMultiPolygon geom)
{
if (geom != null)
{
List <List <List <Point2 <double> > > > pts = Points(geom);
List <Polygon2 <double> > polys = new List <Polygon2 <double> >();
foreach (List <List <Point2 <double> > > cur in pts)
{
polys.Add(ToGeom(cur));
}
return(factory.ConstructPolygonBag(polys));
}
return(null);
}
/// <summary>
/// 1- Convert each Polygon from input PostGisMultiPolygon
/// 2- Create a NetTopologyMultiPolygon with all polygons converted from previous step.
/// Throw ArgumentNullException if any of input marameter is null.
/// </summary>
/// <param name="geometry">a PostgisMultiPolygon. No restriction.</param>
/// <returns>a NetTopology MultiPolygon</returns>
private static Geometry ProcessMultiPolygon(PostgisMultiPolygon geometry)
{
if (geometry != null)
{
//1-
int polygonCount = geometry.PolygonCount;
IPolygon[] netTopoPolygons = new Polygon[polygonCount];
for (int i = 0; i < polygonCount; i++)
{
netTopoPolygons[i] = (Polygon)ProcessPolygon(geometry[i]);
}
//2-
return(new MultiPolygon(netTopoPolygons));;
}
else
{
throw new ArgumentNullException();
}
}
public void MultiPolygonWithMultiplePolygons()
{
var geom2 = new PostgisMultiPolygon(new[]
{
new PostgisPolygon(new[] {
new[]
{
new Coordinate2D(40, 40),
new Coordinate2D(20, 45),
new Coordinate2D(45, 30),
new Coordinate2D(40, 40)
}
}),
new PostgisPolygon(new[] {
new[]
{
new Coordinate2D(20, 35),
new Coordinate2D(10, 30),
new Coordinate2D(10, 10),
new Coordinate2D(30, 5),
new Coordinate2D(45, 20),
new Coordinate2D(20, 35)
}
})
})
{
SRID = 4326
};
using (var conn = OpenConnection())
using (var command = conn.CreateCommand())
{
command.Parameters.AddWithValue("p1", geom2);
command.CommandText = "Select :p1";
command.ExecuteScalar();
}
}
public Task Write(PostgisMultiPolygon value, NpgsqlWriteBuffer buf, NpgsqlLengthCache lengthCache, NpgsqlParameter parameter, bool async) => Write((PostgisGeometry)value, buf, lengthCache, parameter, async);
public int ValidateAndGetLength(PostgisMultiPolygon value, ref NpgsqlLengthCache lengthCache, NpgsqlParameter parameter) => value.GetLen(true);
public override bool Read([CanBeNull] out PostgisGeometry result)
{
Contract.Assert(_inByteaMode != true);
if (!_inByteaMode.HasValue)
{
_inByteaMode = false;
}
result = default(PostgisGeometry);
if (_id == 0)
{
if (_readBuf.ReadBytesLeft < 5)
{
return(false);
}
_bo = (ByteOrder)_readBuf.ReadByte();
_id = _readBuf.ReadUInt32(_bo);
}
if (!_srid.HasValue)
{
if ((_id & (uint)EwkbModifier.HasSRID) != 0)
{
if (_readBuf.ReadBytesLeft < 4)
{
return(false);
}
_srid = _readBuf.ReadUInt32(_bo);
}
else
{
_srid = 0;
}
}
switch ((WkbIdentifier)(_id & 7))
{
case WkbIdentifier.Point:
_lastId = _id;
if (_readBuf.ReadBytesLeft < 16)
{
return(false);
}
result = new PostgisPoint(_readBuf.ReadDouble(_bo), _readBuf.ReadDouble(_bo))
{
SRID = _srid.Value
};
return(true);
case WkbIdentifier.LineString:
_lastId = _id;
if (_ipts == -1)
{
if (_readBuf.ReadBytesLeft < 4)
{
return(false);
}
_points = new Coordinate2D[_readBuf.ReadInt32(_bo)];
_ipts = 0;
}
for (; _ipts < _points.Length; _ipts++)
{
if (_readBuf.ReadBytesLeft < 16)
{
return(false);
}
_points[_ipts] = new Coordinate2D(_readBuf.ReadDouble(_bo), _readBuf.ReadDouble(_bo));
}
result = new PostgisLineString(_points)
{
SRID = _srid.Value
};
return(true);
case WkbIdentifier.Polygon:
_lastId = _id;
if (_irng == -1)
{
if (_readBuf.ReadBytesLeft < 4)
{
return(false);
}
_rings = new Coordinate2D[_readBuf.ReadInt32(_bo)][];
_irng = 0;
}
for (; _irng < _rings.Length; _irng++)
{
if (_ipts == -1)
{
if (_readBuf.ReadBytesLeft < 4)
{
return(false);
}
_rings[_irng] = new Coordinate2D[_readBuf.ReadInt32(_bo)];
_ipts = 0;
}
for (; _ipts < _rings[_irng].Length; _ipts++)
{
if (_readBuf.ReadBytesLeft < 16)
{
return(false);
}
_rings[_irng][_ipts] = new Coordinate2D(_readBuf.ReadDouble(_bo), _readBuf.ReadDouble(_bo));
}
_ipts = -1;
}
result = new PostgisPolygon(_rings)
{
SRID = _srid.Value
};
return(true);
case WkbIdentifier.MultiPoint:
_lastId = _id;
if (_ipts == -1)
{
if (_readBuf.ReadBytesLeft < 4)
{
return(false);
}
_points = new Coordinate2D[_readBuf.ReadInt32(_bo)];
_ipts = 0;
}
for (; _ipts < _points.Length; _ipts++)
{
if (_readBuf.ReadBytesLeft < 21)
{
return(false);
}
_readBuf.Skip(5);
_points[_ipts] = new Coordinate2D(_readBuf.ReadDouble(_bo), _readBuf.ReadDouble(_bo));
}
result = new PostgisMultiPoint(_points)
{
SRID = _srid.Value
};
return(true);
case WkbIdentifier.MultiLineString:
_lastId = _id;
if (_irng == -1)
{
if (_readBuf.ReadBytesLeft < 4)
{
return(false);
}
_rings = new Coordinate2D[_readBuf.ReadInt32(_bo)][];
_irng = 0;
}
for (; _irng < _rings.Length; _irng++)
{
if (_ipts == -1)
{
if (_readBuf.ReadBytesLeft < 9)
{
return(false);
}
_readBuf.Skip(5);
_rings[_irng] = new Coordinate2D[_readBuf.ReadInt32(_bo)];
_ipts = 0;
}
for (; _ipts < _rings[_irng].Length; _ipts++)
{
if (_readBuf.ReadBytesLeft < 16)
{
return(false);
}
_rings[_irng][_ipts] = new Coordinate2D(_readBuf.ReadDouble(_bo), _readBuf.ReadDouble(_bo));
}
_ipts = -1;
}
result = new PostgisMultiLineString(_rings)
{
SRID = _srid.Value
};
return(true);
case WkbIdentifier.MultiPolygon:
_lastId = _id;
if (_ipol == -1)
{
if (_readBuf.ReadBytesLeft < 4)
{
return(false);
}
_pols = new Coordinate2D[_readBuf.ReadInt32(_bo)][][];
_ipol = 0;
}
for (; _ipol < _pols.Length; _ipol++)
{
if (_irng == -1)
{
if (_readBuf.ReadBytesLeft < 9)
{
return(false);
}
_readBuf.Skip(5);
_pols[_ipol] = new Coordinate2D[_readBuf.ReadInt32(_bo)][];
_irng = 0;
}
for (; _irng < _pols[_ipol].Length; _irng++)
{
if (_ipts == -1)
{
if (_readBuf.ReadBytesLeft < 4)
{
return(false);
}
_pols[_ipol][_irng] = new Coordinate2D[_readBuf.ReadInt32(_bo)];
_ipts = 0;
}
for (; _ipts < _pols[_ipol][_irng].Length; _ipts++)
{
if (_readBuf.ReadBytesLeft < 16)
{
return(false);
}
_pols[_ipol][_irng][_ipts] = new Coordinate2D(_readBuf.ReadDouble(_bo), _readBuf.ReadDouble(_bo));
}
_ipts = -1;
}
_irng = -1;
}
result = new PostgisMultiPolygon(_pols)
{
SRID = _srid.Value
};
return(true);
case WkbIdentifier.GeometryCollection:
PostgisGeometry[] g;
int i;
if (_icol.Count == 0)
{
if (_readBuf.ReadBytesLeft < 4)
{
_lastId = _id;
return(false);
}
g = new PostgisGeometry[_readBuf.ReadInt32(_bo)];
i = 0;
if (_newGeom) // We need to know whether we're in a nested geocoll or not.
{
_id = 0;
_newGeom = false;
}
else
{
_id = _lastId;
_lastId = 0;
}
}
else
{
g = _geoms.Pop();
i = _icol.Pop();
if (_icol.Count == 0)
{
_id = _lastId;
_lastId = 0;
}
}
for (; i < g.Length; i++)
{
PostgisGeometry geom;
if (!Read(out geom))
{
_icol.Push(i);
_geoms.Push(g);
_id = (uint)WkbIdentifier.GeometryCollection;
return(false);
}
g[i] = geom;
Reset();
}
result = new PostgisGeometryCollection(g)
{
SRID = _srid.Value
};
return(true);
default:
throw new InvalidOperationException("Unknown Postgis identifier.");
}
}
public void MultiPolygonWithMultiplePolygons()
{
var geom2 = new PostgisMultiPolygon(new[]
{
new PostgisPolygon(new[] {
new[]
{
new Coordinate2D(40, 40),
new Coordinate2D(20, 45),
new Coordinate2D(45, 30),
new Coordinate2D(40, 40)
}
}),
new PostgisPolygon(new[] {
new[]
{
new Coordinate2D(20, 35),
new Coordinate2D(10, 30),
new Coordinate2D(10, 10),
new Coordinate2D(30, 5),
new Coordinate2D(45, 20),
new Coordinate2D(20, 35)
}
})
}) { SRID = 4326 };
using (var conn = OpenConnection())
using (var command = conn.CreateCommand())
{
command.Parameters.AddWithValue("p1", geom2);
command.CommandText = "Select :p1";
command.ExecuteScalar();
}
}
public bool Read(out PostgisMultiPolygon result) => ReadConcrete(out result);
public Task Write(PostgisMultiPolygon value, NpgsqlWriteBuffer buf, NpgsqlLengthCache?lengthCache, NpgsqlParameter?parameter, bool async, CancellationToken cancellationToken = default) => Write((PostgisGeometry)value, buf, lengthCache, parameter, async, cancellationToken);
public bool Read(out PostgisGeometry result)
{
result = default(PostgisGeometry);
if (_id == 0)
{
if (_buf.ReadBytesLeft < 5)
{
return(false);
}
_bo = (ByteOrder)_buf.ReadByte();
_id = _buf.ReadUInt32(_bo);
}
if (!_srid.HasValue)
{
if ((_id & (uint)EwkbModifier.HasSRID) != 0)
{
if (_buf.ReadBytesLeft < 4)
{
return(false);
}
_srid = _buf.ReadUInt32(_bo);
}
else
{
_srid = 0;
}
}
switch ((WkbIdentifier)(_id & (uint)7))
{
case WkbIdentifier.Point:
if (_buf.ReadBytesLeft < 16)
{
return(false);
}
result = new PostgisPoint(_buf.ReadDouble(_bo), _buf.ReadDouble(_bo))
{
SRID = _srid.Value
};
return(true);
case WkbIdentifier.LineString:
if (_ipts == -1)
{
if (_buf.ReadBytesLeft < 4)
{
return(false);
}
_points = new Coordinate2D[_buf.ReadInt32(_bo)];
_ipts = 0;
}
for (; _ipts < _points.Length; _ipts++)
{
if (_buf.ReadBytesLeft < 16)
{
return(false);
}
_points[_ipts] = new Coordinate2D(_buf.ReadDouble(_bo), _buf.ReadDouble(_bo));
}
result = new PostgisLineString(_points)
{
SRID = _srid.Value
};
return(true);
case WkbIdentifier.Polygon:
if (_irng == -1)
{
if (_buf.ReadBytesLeft < 4)
{
return(false);
}
_rings = new Coordinate2D[_buf.ReadInt32(_bo)][];
_irng = 0;
}
for (; _irng < _rings.Length; _irng++)
{
if (_ipts == -1)
{
if (_buf.ReadBytesLeft < 4)
{
return(false);
}
_rings[_irng] = new Coordinate2D[_buf.ReadInt32(_bo)];
_ipts = 0;
}
for (; _ipts < _rings[_irng].Length; _ipts++)
{
if (_buf.ReadBytesLeft < 16)
{
return(false);
}
_rings[_irng][_ipts] = new Coordinate2D(_buf.ReadDouble(_bo), _buf.ReadDouble(_bo));
}
_ipts = -1;
}
result = new PostgisPolygon(_rings)
{
SRID = _srid.Value
};
return(true);
case WkbIdentifier.MultiPoint:
if (_ipts == -1)
{
if (_buf.ReadBytesLeft < 4)
{
return(false);
}
_points = new Coordinate2D[_buf.ReadInt32(_bo)];
_ipts = 0;
}
for (; _ipts < _points.Length; _ipts++)
{
if (_buf.ReadBytesLeft < 21)
{
return(false);
}
_buf.Skip(5);
_points[_ipts] = new Coordinate2D(_buf.ReadDouble(_bo), _buf.ReadDouble(_bo));
}
result = new PostgisMultiPoint(_points)
{
SRID = _srid.Value
};
return(true);
case WkbIdentifier.MultiLineString:
if (_irng == -1)
{
if (_buf.ReadBytesLeft < 4)
{
return(false);
}
_rings = new Coordinate2D[_buf.ReadInt32(_bo)][];
_irng = 0;
}
for (; _irng < _rings.Length; _irng++)
{
if (_ipts == -1)
{
if (_buf.ReadBytesLeft < 9)
{
return(false);
}
_buf.Skip(5);
_rings[_irng] = new Coordinate2D[_buf.ReadInt32(_bo)];
_ipts = 0;
}
for (; _ipts < _rings[_irng].Length; _ipts++)
{
if (_buf.ReadBytesLeft < 16)
{
return(false);
}
_rings[_irng][_ipts] = new Coordinate2D(_buf.ReadDouble(_bo), _buf.ReadDouble(_bo));
}
_ipts = -1;
}
result = new PostgisMultiLineString(_rings)
{
SRID = _srid.Value
};
return(true);
case WkbIdentifier.MultiPolygon:
if (_ipol == -1)
{
if (_buf.ReadBytesLeft < 4)
{
return(false);
}
_pols = new Coordinate2D[_buf.ReadInt32(_bo)][][];
_ipol = 0;
}
for (; _ipol < _pols.Length; _ipol++)
{
if (_irng == -1)
{
if (_buf.ReadBytesLeft < 9)
{
return(false);
}
_buf.Skip(5);
_pols[_ipol] = new Coordinate2D[_buf.ReadInt32(_bo)][];
_irng = 0;
}
for (; _irng < _pols[_ipol].Length; _irng++)
{
if (_ipts == -1)
{
if (_buf.ReadBytesLeft < 4)
{
return(false);
}
_pols[_ipol][_irng] = new Coordinate2D[_buf.ReadInt32(_bo)];
_ipts = 0;
}
for (; _ipts < _pols[_ipol][_irng].Length; _ipts++)
{
if (_buf.ReadBytesLeft < 16)
{
return(false);
}
_pols[_ipol][_irng][_ipts] = new Coordinate2D(_buf.ReadDouble(_bo), _buf.ReadDouble(_bo));
}
_ipts = -1;
}
_irng = -1;
}
result = new PostgisMultiPolygon(_pols)
{
SRID = _srid.Value
};
return(true);
case WkbIdentifier.GeometryCollection:
if (_newGeom)
{
if (_buf.ReadBytesLeft < 4)
{
return(false);
}
_geoms.Push(new PostgisGeometry[_buf.ReadInt32(_bo)]);
_icol.Push(new Counter());
}
_id = 0;
var g = _geoms.Peek();
var i = _icol.Peek();
for (; i < g.Length; i.Increment())
{
PostgisGeometry geom;
if (!Read(out geom))
{
_newGeom = false;
return(false);
}
g[i] = geom;
Reset();
}
result = new PostgisGeometryCollection(g)
{
SRID = _srid.Value
};
_geoms.Pop();
_icol.Pop();
return(true);
default:
throw new InvalidOperationException("Unknown Postgis identifier.");
}
}
