Class CoordinateEqualityComparer

A class that can be used to test coordinates for equality.

It uses the algorithm that was default for NTS prior to v2.2, i.e. checks if the 2d distance between coordinates x and y is less than or equal to a tolerance value.

Inheritance

Object

EqualityComparer<Coordinate>

CoordinateEqualityComparer

PerOrdinateEqualityComparer

Implements

IEqualityComparer<Coordinate>

IEqualityComparer

Inherited Members

EqualityComparer<Coordinate>.IEqualityComparer.Equals(Object, Object)

EqualityComparer<Coordinate>.IEqualityComparer.GetHashCode(Object)

EqualityComparer<Coordinate>.Default

Object.Equals(Object)

Object.Equals(Object, Object)

Object.GetHashCode()

Object.GetType()

Object.MemberwiseClone()

Object.ReferenceEquals(Object, Object)

Object.ToString()

Namespace: NetTopologySuite.Geometries

Assembly: NetTopologySuite.dll

Syntax

public class CoordinateEqualityComparer : EqualityComparer<Coordinate>, IEqualityComparer<Coordinate>, IEqualityComparer

Methods

AreEqual(Coordinate, Coordinate, Double)

Method to test 2 Coordinates for equality, allowing a tolerance.

Declaration

protected virtual bool AreEqual(Coordinate a, Coordinate b, double tolerance)

Parameters

Type	Name	Description
Coordinate	a	The 1st Coordinate
Coordinate	b	The 2nd Coordinate
Double	tolerance	A tolerance value

Returns

Type	Description
Boolean	true if a and b can be considered equal.

Equals(Coordinate, Coordinate)

Declaration

public sealed override bool Equals(Coordinate x, Coordinate y)

Parameters

Type	Name	Description
Coordinate	x
Coordinate	y

Returns

Type	Description
Boolean

Overrides

System.Collections.Generic.EqualityComparer<NetTopologySuite.Geometries.Coordinate>.Equals(NetTopologySuite.Geometries.Coordinate, NetTopologySuite.Geometries.Coordinate)

Equals(Coordinate, Coordinate, Double)

Compares Coordinates x and y for equality allowing for a tolerance.

Declaration

public bool Equals(Coordinate x, Coordinate y, double tolerance)

Parameters

Type	Name	Description
Coordinate	x	A Coordinate
Coordinate	y	A Coordinate
Double	tolerance	A tolerance value.

Returns

Type	Description
Boolean	true if x and y can be considered equal; otherwise false.

GetHashCode(Coordinate)

Declaration

public sealed override int GetHashCode(Coordinate c)

Parameters

Type	Name	Description
Coordinate	c

Returns

Type	Description
Int32

Overrides

System.Collections.Generic.EqualityComparer<NetTopologySuite.Geometries.Coordinate>.GetHashCode(NetTopologySuite.Geometries.Coordinate)

Implements

System.Collections.Generic.IEqualityComparer<T>

System.Collections.IEqualityComparer