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PostgisTypes.cs
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763 lines (645 loc) · 20.9 KB
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using System;
using System.Collections.Generic;
using System.Linq;
using Npgsql;
namespace NpgsqlTypes
{
#pragma warning disable 1591
/// <summary>
/// Represents the identifier of the Well Known Binary representation of a geographical feature specified by the OGC.
/// http://portal.opengeospatial.org/files/?artifact_id=13227 Chapter 6.3.2.7
/// </summary>
enum WkbIdentifier : uint
{
Point = 1,
LineString = 2,
Polygon = 3,
MultiPoint = 4,
MultiLineString = 5,
MultiPolygon = 6,
GeometryCollection = 7
}
/// <summary>
/// The modifiers used by postgis to extend the geomtry's binary representation
/// </summary>
[Flags]
enum EwkbModifier : uint
{
HasSRID = 0x20000000,
HasMDim = 0x40000000,
HasZDim = 0x80000000
}
/// <summary>
/// A structure representing a 2D double precision floating point coordinate;
/// </summary>
public struct Coordinate2D
{
/// <summary>
/// X coordinate.
/// </summary>
public double X;
/// <summary>
/// Y coordinate.
/// </summary>
public double Y;
/// <summary>
/// Generates a new BBpoint with the specified coordinates.
/// </summary>
/// <param name="x">X coordinate</param>
/// <param name="y">Y coordinate</param>
public Coordinate2D(double x, double y) { X = x; Y = y;}
public bool Equals(Coordinate2D c)
{
return X == c.X && Y == c.Y;
}
public override int GetHashCode()
{
return X.GetHashCode() ^ PGUtil.RotateShift(Y.GetHashCode(), sizeof(int) / 2);
}
}
/// <summary>
/// Represents an Postgis feature.
/// </summary>
public abstract class PostgisGeometry
{
/// <summary>
/// returns the binary length of the data structure without header.
/// </summary>
/// <returns></returns>
protected abstract int GetLenHelper();
internal abstract WkbIdentifier Identifier { get;}
internal int GetLen()
{
// header =
// 1 byte for the endianness of the structure
// + 4 bytes for the type identifier
// (+ 4 bytes for the SRID if present)
return 5 + (SRID == 0 ? 0 : 4) + GetLenHelper();
}
/// <summary>
/// The Spatial Reference System Identifier of the geometry (0 if unspecified).
/// </summary>
public uint SRID { get; set; }
}
/// <summary>
/// Represents an Postgis 2D Point
/// </summary>
public class PostgisPoint : PostgisGeometry, IEquatable<PostgisPoint>
{
internal override WkbIdentifier Identifier
{
get { return WkbIdentifier.Point; }
}
Coordinate2D _coord;
protected override int GetLenHelper()
{
return 16;
}
public PostgisPoint(double x, double y)
{
_coord.X = x;
_coord.Y = y;
}
public double X
{
get { return _coord.X ; }
set { _coord.X = value; }
}
public double Y
{
get { return _coord.Y; }
set { _coord.Y = value; }
}
public bool Equals(PostgisPoint other)
{
if (ReferenceEquals(other, null))
return false;
return _coord.Equals(other._coord);
}
public override bool Equals(object obj)
{
return Equals(obj as PostgisPoint);
}
public static bool operator ==(PostgisPoint x, PostgisPoint y)
{
if (ReferenceEquals(x, null))
return ReferenceEquals(y, null);
return x.Equals(y);
}
public static bool operator !=(PostgisPoint x, PostgisPoint y)
{
return !(x == y);
}
public override int GetHashCode()
{
return X.GetHashCode() ^ PGUtil.RotateShift(Y.GetHashCode(), sizeof(int) / 2);
}
}
/// <summary>
/// Represents an Ogc 2D LineString
/// </summary>
public class PostgisLineString : PostgisGeometry, IEquatable<PostgisLineString>, IEnumerable<Coordinate2D>
{
readonly Coordinate2D[] _points;
internal override WkbIdentifier Identifier
{
get { return WkbIdentifier.LineString; }
}
protected override int GetLenHelper()
{
return 4 + _points.Length * 16;
}
public IEnumerator<Coordinate2D> GetEnumerator()
{
return ((IEnumerable<Coordinate2D>)_points).GetEnumerator();
}
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
public Coordinate2D this[int index]
{
get { return _points[index]; }
}
public PostgisLineString(IEnumerable<Coordinate2D> points)
{
_points = points.ToArray();
}
public PostgisLineString(Coordinate2D[] points)
{
_points = points;
}
public int PointCount
{
get { return _points.Length; }
}
public bool Equals(PostgisLineString other)
{
if (ReferenceEquals(other , null))
return false ;
if (_points.Length != other._points.Length) return false;
for (var i = 0; i < _points.Length; i++)
{
if (!_points[i].Equals(other._points[i]))
return false;
}
return true;
}
public override bool Equals(object obj)
{
return Equals(obj as PostgisLineString);
}
public static bool operator ==(PostgisLineString x, PostgisLineString y)
{
if (ReferenceEquals(x, null))
return ReferenceEquals(y, null);
return x.Equals(y);
}
public static bool operator !=(PostgisLineString x, PostgisLineString y)
{
return !(x == y);
}
public override int GetHashCode()
{
var ret = 266370105;//seed with something other than zero to make paths of all zeros hash differently.
for (var i = 0; i < _points.Length; i++)
{
ret ^= PGUtil.RotateShift(_points[i].GetHashCode(), ret % sizeof(int));
}
return ret;
}
}
/// <summary>
/// Represents an Postgis 2D Polygon.
/// </summary>
public class PostgisPolygon : PostgisGeometry, IEquatable<PostgisPolygon>
{
readonly Coordinate2D[][] _rings;
protected override int GetLenHelper()
{
return 4 + _rings.Length * 4 + TotalPointCount * 16;
}
internal override WkbIdentifier Identifier
{
get { return WkbIdentifier.Polygon; }
}
public Coordinate2D this[int ringIndex, int pointIndex]
{
get
{
return _rings[ringIndex][pointIndex];
}
}
public Coordinate2D[] this[int ringIndex]
{
get
{
return _rings[ringIndex];
}
}
public PostgisPolygon(Coordinate2D[][] rings)
{
_rings = rings;
}
public PostgisPolygon(IEnumerable<IEnumerable<Coordinate2D>> rings)
{
_rings = rings.Select(x => x.ToArray()).ToArray();
}
public bool Equals(PostgisPolygon other)
{
if (ReferenceEquals(other, null))
return false;
if (_rings.Length != other._rings.Length)
return false;
for (var i = 0; i < _rings.Length; i++)
{
if (_rings[i].Length != other._rings[i].Length)
return false;
for (var j = 0; j < _rings[i].Length; j++)
{
if (!_rings[i][j].Equals (other._rings[i][j]))
return false;
}
}
return true;
}
public override bool Equals(object obj)
{
return Equals(obj as PostgisPolygon);
}
public static bool operator ==(PostgisPolygon x, PostgisPolygon y)
{
if (ReferenceEquals(x, null))
return ReferenceEquals(y, null);
return x.Equals(y);
}
public static bool operator !=(PostgisPolygon x, PostgisPolygon y)
{
return !(x == y);
}
public int RingCount
{
get { return _rings.Length; }
}
public int TotalPointCount
{
get
{
var r = 0;
for (var i = 0; i < _rings.Length; i++)
{
r += _rings[i].Length;
}
return r;
}
}
public override int GetHashCode()
{
var ret = 266370105;//seed with something other than zero to make paths of all zeros hash differently.
for (var i = 0; i < _rings.Length; i++)
{
for (int j = 0; j < _rings[i].Length; j++)
{
ret ^= PGUtil.RotateShift(_rings[i][j].GetHashCode(), ret % sizeof(int));
}
}
return ret;
}
}
/// <summary>
/// Represents a Postgis 2D MultiPoint
/// </summary>
public class PostgisMultiPoint : PostgisGeometry, IEquatable<PostgisMultiPoint>, IEnumerable<Coordinate2D>
{
readonly Coordinate2D[] _points;
internal override WkbIdentifier Identifier
{
get { return WkbIdentifier.MultiPoint; }
}
protected override int GetLenHelper()
{
return 4 + _points.Length * 21; //each point of a multipoint is a postgispoint, not a building block point.
}
public IEnumerator<Coordinate2D> GetEnumerator()
{
return ((IEnumerable<Coordinate2D>)_points).GetEnumerator();
}
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
public PostgisMultiPoint (Coordinate2D[] points)
{
_points = points;
}
public PostgisMultiPoint(IEnumerable<PostgisPoint> points)
{
_points = points.Select(x => new Coordinate2D(x.X, x.Y)).ToArray();
}
public PostgisMultiPoint(IEnumerable<Coordinate2D> points)
{
_points = points.ToArray();
}
public Coordinate2D this[int indexer]
{
get { return _points[indexer]; }
}
public bool Equals(PostgisMultiPoint other)
{
if (ReferenceEquals(other ,null))
return false ;
if (_points.Length != other._points.Length)
return false;
for (var i = 0; i < _points.Length; i++)
{
if (!_points[i].Equals(other._points[i]))
return false;
}
return true;
}
public override bool Equals(object obj)
{
return Equals(obj as PostgisMultiPoint);
}
public static bool operator ==(PostgisMultiPoint x, PostgisMultiPoint y)
{
if (ReferenceEquals(x, null))
return ReferenceEquals(y, null);
return x.Equals(y);
}
public static bool operator !=(PostgisMultiPoint x, PostgisMultiPoint y)
{
return !(x == y);
}
public override int GetHashCode()
{
var ret = 266370105;//seed with something other than zero to make paths of all zeros hash differently.
for (var i = 0; i < _points.Length; i++)
{
ret ^= PGUtil.RotateShift(_points[i].GetHashCode(), ret % sizeof(int));
}
return ret;
}
public int PointCount
{
get { return _points.Length; }
}
}
/// <summary>
/// Represents a Postgis 2D MultiLineString
/// </summary>
public class PostgisMultiLineString : PostgisGeometry, IEquatable<PostgisMultiLineString>, IEnumerable<PostgisLineString>
{
readonly PostgisLineString[] _lineStrings;
internal PostgisMultiLineString(Coordinate2D[][] pointArray)
{
_lineStrings = new PostgisLineString[pointArray.Length];
for (var i = 0; i < pointArray.Length; i++)
{
_lineStrings[i] = new PostgisLineString(pointArray[i]);
}
}
internal override WkbIdentifier Identifier
{
get { return WkbIdentifier.MultiLineString; }
}
protected override int GetLenHelper()
{
var n = 4;
for (var i = 0; i < _lineStrings.Length; i++)
{
n += _lineStrings[i].GetLen();
}
return n;
}
public IEnumerator<PostgisLineString> GetEnumerator()
{
return ((IEnumerable<PostgisLineString>)_lineStrings).GetEnumerator();
}
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
public PostgisMultiLineString(PostgisLineString[] linestrings)
{
_lineStrings = linestrings;
}
public PostgisMultiLineString(IEnumerable<PostgisLineString> linestrings)
{
_lineStrings = linestrings.ToArray();
}
public PostgisLineString this[int index]
{
get { return _lineStrings[index]; }
}
public PostgisMultiLineString(IEnumerable<IEnumerable<Coordinate2D>> pointList)
{
_lineStrings = pointList.Select(x => new PostgisLineString(x)).ToArray();
}
public bool Equals(PostgisMultiLineString other)
{
if (ReferenceEquals(other ,null))
return false ;
if (_lineStrings.Length != other._lineStrings.Length) return false;
for (var i = 0; i < _lineStrings.Length; i++)
{
if (_lineStrings[i] != other._lineStrings[i]) return false;
}
return true;
}
public override bool Equals(object obj)
{
return Equals(obj as PostgisMultiLineString);
}
public static bool operator ==(PostgisMultiLineString x, PostgisMultiLineString y)
{
if (ReferenceEquals(x, null))
return ReferenceEquals(y, null);
return x.Equals(y);
}
public static bool operator !=(PostgisMultiLineString x, PostgisMultiLineString y)
{
return !(x == y);
}
public override int GetHashCode()
{
var ret = 266370105;//seed with something other than zero to make paths of all zeros hash differently.
for (var i = 0; i < _lineStrings.Length; i++)
{
ret ^= PGUtil.RotateShift(_lineStrings[i].GetHashCode(), ret % sizeof(int));
}
return ret;
}
public int LineCount
{
get
{
return _lineStrings.Length;
}
}
}
/// <summary>
/// Represents a Postgis 2D MultiPolygon.
/// </summary>
public class PostgisMultiPolygon : PostgisGeometry, IEquatable<PostgisMultiPolygon>, IEnumerable<PostgisPolygon>
{
readonly PostgisPolygon[] _polygons;
public IEnumerator<PostgisPolygon> GetEnumerator()
{
return ((IEnumerable<PostgisPolygon>)_polygons).GetEnumerator();
}
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
internal override WkbIdentifier Identifier
{
get { return WkbIdentifier.MultiPolygon; }
}
public PostgisPolygon this[int index]
{
get { return _polygons[index]; }
}
public PostgisMultiPolygon(PostgisPolygon[] polygons)
{
_polygons = polygons;
}
public PostgisMultiPolygon(IEnumerable<PostgisPolygon> polygons)
{
_polygons = polygons.ToArray();
}
public PostgisMultiPolygon(IEnumerable<IEnumerable<IEnumerable<Coordinate2D>>> ringList)
{
_polygons = ringList.Select(x => new PostgisPolygon(x)).ToArray();
}
public bool Equals(PostgisMultiPolygon other)
{
if (_polygons.Length != other._polygons.Length) return false;
for (var i = 0; i < _polygons.Length; i++)
{
if (_polygons[i] != other._polygons[i]) return false;
}
return true;
}
public override bool Equals(object obj)
{
return obj is PostgisMultiPolygon && Equals((PostgisMultiPolygon)obj);
}
public static bool operator ==(PostgisMultiPolygon x, PostgisMultiPolygon y)
{
if (ReferenceEquals(x, null))
return ReferenceEquals(y, null);
return x.Equals(y);
}
public static bool operator !=(PostgisMultiPolygon x, PostgisMultiPolygon y)
{
return !(x == y);
}
public override int GetHashCode()
{
var ret = 266370105;//seed with something other than zero to make paths of all zeros hash differently.
for (var i = 0; i < _polygons.Length; i++)
{
ret ^= PGUtil.RotateShift(_polygons[i].GetHashCode(), ret % sizeof(int));
}
return ret;
}
protected override int GetLenHelper()
{
var n = 4;
for (var i = 0; i < _polygons.Length; i++)
{
n += _polygons[i].GetLen();
}
return n;
}
public int PolygonCount
{
get
{
return _polygons.Length;
}
}
}
/// <summary>
/// Represents a collection of Postgis feature.
/// </summary>
public class PostgisGeometryCollection : PostgisGeometry, IEquatable<PostgisGeometryCollection>, IEnumerable<PostgisGeometry>
{
readonly PostgisGeometry[] _geometries;
public PostgisGeometry this[int index]
{
get { return _geometries[index]; }
}
internal override WkbIdentifier Identifier
{
get { return WkbIdentifier.GeometryCollection; }
}
public IEnumerator<PostgisGeometry> GetEnumerator()
{
return ((IEnumerable<PostgisGeometry>)_geometries).GetEnumerator();
}
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
public PostgisGeometryCollection(PostgisGeometry[] geometries)
{
_geometries = geometries;
}
public PostgisGeometryCollection(IEnumerable<PostgisGeometry> geometries)
{
_geometries = geometries.ToArray();
}
public bool Equals(PostgisGeometryCollection other)
{
if (ReferenceEquals(other, null))
return false;
if (_geometries.Length != other._geometries.Length) return false;
for (var i = 0; i < _geometries.Length; i++)
{
if (!_geometries[i].Equals(other._geometries[i])) return false;
}
return true;
}
public override bool Equals(object obj)
{
return Equals(obj as PostgisGeometryCollection);
}
public static bool operator ==(PostgisGeometryCollection x, PostgisGeometryCollection y)
{
if (ReferenceEquals(x, null))
return ReferenceEquals(y, null);
return x.Equals(y);
}
public static bool operator !=(PostgisGeometryCollection x, PostgisGeometryCollection y)
{
return !(x == y);
}
public override int GetHashCode()
{
var ret = 266370105;//seed with something other than zero to make paths of all zeros hash differently.
for (var i = 0; i < _geometries.Length; i++)
{
ret ^= PGUtil.RotateShift(_geometries[i].GetHashCode(), ret % sizeof(int));
}
return ret;
}
protected override int GetLenHelper()
{
var n = 4;
for (var i = 0; i < _geometries.Length; i++)
{
n += _geometries[i].GetLen();
}
return n;
}
public int GeometryCount
{
get
{
return _geometries.Length;
}
}
}
}