Class Point

Represents a single point.

A Point is topologically valid if and only if:

• The coordinate which defines it if any) is a valid coordinate (i.e. does not have an NaN X- or Y-ordinate

Inheritance

object

Geometry

Point

Implements

IComparable

IComparable<Geometry>

IPuntal

Inherited Members

Geometry.TypeNamePoint

Geometry.TypeNameMultiPoint

Geometry.TypeNameLineString

Geometry.TypeNameLinearRing

Geometry.TypeNameMultiLineString

Geometry.TypeNamePolygon

Geometry.TypeNameMultiPolygon

Geometry.TypeNameGeometryCollection

Geometry.Factory

Geometry.UserData

Geometry.SRID

Geometry.HasNonEmptyElements(Geometry[])

Geometry.HasNullElements(object[])

Geometry.HasNullElements<T>(IEnumerable<T>)

Geometry.PrecisionModel

Geometry.NumGeometries

Geometry.GetGeometryN(int)

Geometry.IsSimple

Geometry.IsValid

Geometry.Distance(Geometry)

Geometry.IsWithinDistance(Geometry, double)

Geometry.Area

Geometry.Length

Geometry.Centroid

Geometry.InteriorPoint

Geometry.PointOnSurface

Geometry.HasDimension(Dimension)

Geometry.Envelope

Geometry.EnvelopeInternal

Geometry.GeometryChanged()

Geometry.GeometryChangedAction()

Geometry.Disjoint(Geometry)

Geometry.Touches(Geometry)

Geometry.Intersects(Geometry)

Geometry.Crosses(Geometry)

Geometry.Within(Geometry)

Geometry.Contains(Geometry)

Geometry.Overlaps(Geometry)

Geometry.Covers(Geometry)

Geometry.CoveredBy(Geometry)

Geometry.Relate(Geometry, string)

Geometry.Relate(Geometry)

Geometry.Equals(Geometry)

Geometry.EqualsTopologically(Geometry)

Geometry.Equals(object)

Geometry.GetHashCode()

Geometry.ToString()

Geometry.ToText()

Geometry.AsText()

Geometry.ToBinary()

Geometry.AsBinary()

Geometry.ToGMLFeature()

Geometry.Buffer(double)

Geometry.Buffer(double, EndCapStyle)

Geometry.Buffer(double, int)

Geometry.Buffer(double, int, EndCapStyle)

Geometry.Buffer(double, BufferParameters)

Geometry.ConvexHull()

Geometry.Intersection(Geometry)

Geometry.Union(Geometry)

Geometry.Difference(Geometry)

Geometry.SymmetricDifference(Geometry)

Geometry.Union()

Geometry.EqualsExact(Geometry)

Geometry.EqualsNormalized(Geometry)

Geometry.Copy()

Geometry.Normalized()

Geometry.CompareTo(object)

Geometry.CompareTo(Geometry)

Geometry.CompareTo(object, IComparer<CoordinateSequence>)

Geometry.IsEquivalentClass(Geometry)

Geometry.CheckNotGeometryCollection(Geometry)

Geometry.IsGeometryCollection

Geometry.Compare(List<Geometry>, List<Geometry>)

Geometry.Equal(Coordinate, Coordinate, double)

Geometry.IsRectangle

Geometry.DefaultFactory

Geometry.CreateArray(int, double)

Geometry.CreateArray(CoordinateSequence, Ordinate)

object.Equals(object, object)

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

Namespace: NetTopologySuite.Geometries

Assembly: NetTopologySuite.dll

Syntax

[Serializable]
public class Point : Geometry, IComparable, IComparable<Geometry>, IPuntal

Constructors

Point(Coordinate)

Initializes a new instance of the Point class.

Declaration

public Point(Coordinate coordinate)

Parameters

Type	Name	Description
Coordinate	coordinate	The coordinate used for create this Point.

Remarks

For create this Geometry is used a standard GeometryFactory with PrecisionModel == Floating.

Point(CoordinateSequence, GeometryFactory)

Constructs a Point with the given coordinate.

Declaration

public Point(CoordinateSequence coordinates, GeometryFactory factory)

Parameters

Type	Name	Description
CoordinateSequence	coordinates	Contains the single coordinate on which to base this Point, or null to create the empty point.
GeometryFactory	factory

Point(double, double)

Initializes a new instance of the Point class.

Declaration

public Point(double x, double y)

Parameters

Type	Name	Description
double	x	The x coordinate.
double	y	The y coordinate.

Remarks

For create this Geometry is used a standard GeometryFactory with PrecisionModel set to Floating.

Point(double, double, double)

Initializes a new instance of the Point class.

Declaration

public Point(double x, double y, double z)

Parameters

Type	Name	Description
double	x	The x coordinate.
double	y	The y coordinate.
double	z	The z coordinate.

Remarks

For create this Geometry is used a standard GeometryFactory with PrecisionModel set to Floating.

Fields

Empty

Represents an empty Point.

Declaration

public static readonly Point Empty

Field Value

Type	Description
Point

Properties

Boundary

Gets the boundary of this geometry. Zero-dimensional geometries have no boundary by definition, so an empty GeometryCollection is returned.

Declaration

public override Geometry Boundary { get; }

Property Value

Type	Description
Geometry

Overrides

Geometry.Boundary

BoundaryDimension

Declaration

public override Dimension BoundaryDimension { get; }

Property Value

Type	Description
Dimension

Overrides

Geometry.BoundaryDimension

Coordinate

Returns a vertex of this geometry (usually, but not necessarily, the first one), or null if the geometry is empty.

Declaration

public override Coordinate Coordinate { get; }

Property Value

Type	Description
Coordinate	A coordinate which is a vertex of this Geometry.

Overrides

Geometry.Coordinate

Remarks

The returned coordinate should not be assumed to be an actual Coordinate object used in the internal representation.

CoordinateSequence

Declaration

public CoordinateSequence CoordinateSequence { get; }

Property Value

Type	Description
CoordinateSequence

Coordinates

Declaration

public override Coordinate[] Coordinates { get; }

Property Value

Type	Description
Coordinate[]

Overrides

Geometry.Coordinates

Dimension

Declaration

public override Dimension Dimension { get; }

Property Value

Type	Description
Dimension

Overrides

Geometry.Dimension

GeometryType

Returns the name of this object's interface.

Declaration

public override string GeometryType { get; }

Property Value

Type	Description
string	"Point"

Overrides

Geometry.GeometryType

IsEmpty

Declaration

public override bool IsEmpty { get; }

Property Value

Type	Description
bool

Overrides

Geometry.IsEmpty

M

Declaration

public double M { get; set; }

Property Value

Type	Description
double

NumPoints

Declaration

public override int NumPoints { get; }

Property Value

Type	Description
int

Overrides

Geometry.NumPoints

OgcGeometryType

Gets the OGC geometry type

Declaration

public override OgcGeometryType OgcGeometryType { get; }

Property Value

Type	Description
OgcGeometryType

Overrides

Geometry.OgcGeometryType

SortIndex

Gets a value to sort the geometry

Declaration

protected override Geometry.SortIndexValue SortIndex { get; }

Property Value

Type	Description
Geometry.SortIndexValue

Overrides

Geometry.SortIndex

Remarks

NOTE:
For JTS v1.17 this property's getter has been renamed to getTypeCode(). In order not to break binary compatibility we did not follow.

X

Gets a value indicating the x-ordinate of this point

Declaration

public double X { get; set; }

Property Value

Type	Description
double

Remarks

Deviation from JTS: this implementation does not throw an exception when this property is accessed or set

Y

Gets a value indicating the y-ordinate of this point

Declaration

public double Y { get; set; }

Property Value

Type	Description
double

Remarks

Deviation from JTS: this implementation does not throw an exception when this property is accessed or set

Z

Declaration

public double Z { get; set; }

Property Value

Type	Description
double

Methods

Apply(ICoordinateFilter)

Performs an operation with or on this Geometry's coordinates.

Declaration

public override void Apply(ICoordinateFilter filter)

Parameters

Type	Name	Description
ICoordinateFilter	filter	The filter to apply to this Geometry's coordinates

Overrides

Geometry.Apply(ICoordinateFilter)

Remarks

If this method modifies any coordinate values, GeometryChanged() must be called to update the geometry state. Note that you cannot use this method to modify this Geometry if its underlying CoordinateSequence's #get method returns a copy of the Coordinate, rather than the actual Coordinate stored (if it even stores Coordinate objects at all).

Apply(ICoordinateSequenceFilter)

Performs an operation on the coordinates in this Geometry's CoordinateSequences.

Declaration

public override void Apply(ICoordinateSequenceFilter filter)

Parameters

Type	Name	Description
ICoordinateSequenceFilter	filter	The filter to apply

Overrides

Geometry.Apply(ICoordinateSequenceFilter)

Remarks

If the filter reports that a coordinate value has been changed, GeometryChanged() will be called automatically.

Apply(IEntireCoordinateSequenceFilter)

Performs an operation on this Geometry's CoordinateSequences.

Declaration

public override void Apply(IEntireCoordinateSequenceFilter filter)

Parameters

Type	Name	Description
IEntireCoordinateSequenceFilter	filter	The filter to apply

Overrides

Geometry.Apply(IEntireCoordinateSequenceFilter)

Remarks

If the filter reports that a coordinate value has been changed, GeometryChanged() will be called automatically.

Apply(IGeometryComponentFilter)

Performs an operation with or on this Geometry and its component Geometry's. Only GeometryCollections and Polygons have component Geometry's; for Polygons they are the LinearRings of the shell and holes.

Declaration

public override void Apply(IGeometryComponentFilter filter)

Parameters

Type	Name	Description
IGeometryComponentFilter	filter	The filter to apply to this Geometry.

Overrides

Geometry.Apply(IGeometryComponentFilter)

Apply(IGeometryFilter)

Performs an operation with or on this Geometry and its subelement Geometrys (if any). Only GeometryCollections and subclasses have subelement Geometry's.

Declaration

public override void Apply(IGeometryFilter filter)

Parameters

Type	Name	Description
IGeometryFilter	filter	The filter to apply to this Geometry (and its children, if it is a GeometryCollection).

Overrides

Geometry.Apply(IGeometryFilter)

CompareToSameClass(object)

Declaration

protected override int CompareToSameClass(object other)

Parameters

Type	Name	Description
object	other

Returns

Type	Description
int

Overrides

Geometry.CompareToSameClass(object)

CompareToSameClass(object, IComparer<CoordinateSequence>)

Declaration

protected override int CompareToSameClass(object other, IComparer<CoordinateSequence> comparer)

Parameters

Type	Name	Description
object	other
IComparer<CoordinateSequence>	comparer

Returns

Type	Description
int

Overrides

Geometry.CompareToSameClass(object, IComparer<CoordinateSequence>)

ComputeEnvelopeInternal()

Declaration

protected override Envelope ComputeEnvelopeInternal()

Returns

Type	Description
Envelope

Overrides

Geometry.ComputeEnvelopeInternal()

CopyInternal()

An internal method to copy subclass-specific geometry data.

Declaration

protected override Geometry CopyInternal()

Returns

Type	Description
Geometry	A copy of the target geometry object.

Overrides

Geometry.CopyInternal()

EqualsExact(Geometry, double)

Declaration

public override bool EqualsExact(Geometry other, double tolerance)

Parameters

Type	Name	Description
Geometry	other
double	tolerance

Returns

Type	Description
bool

Overrides

Geometry.EqualsExact(Geometry, double)

GetOrdinates(Ordinate)

Gets an array of double ordinate values

Declaration

public override double[] GetOrdinates(Ordinate ordinate)

Parameters

Type	Name	Description
Ordinate	ordinate	The ordinate index

Returns

Type	Description
double[]	An array of ordinate values

Overrides

Geometry.GetOrdinates(Ordinate)

Normalize()

Declaration

public override void Normalize()

Overrides

Geometry.Normalize()

Reverse()

Computes a new geometry which has all component coordinate sequences in reverse order (opposite orientation) to this one.

Declaration

[Obsolete("Call Geometry.Reverse()")]
public override Geometry Reverse()

Returns

Type	Description
Geometry	A reversed geometry

Overrides

Geometry.Reverse()

Remarks

Don't override this function, implement ReverseInternal().

ReverseInternal()

The actual implementation of the Reverse() function for POINTs.

Declaration

protected override Geometry ReverseInternal()

Returns

Type	Description
Geometry	A reversed geometry

Overrides

Geometry.ReverseInternal()

Implements

IComparable

IComparable<T>

IPuntal

Extension Methods

PolygonalExtracter.GetPolygonals<TCollection>(Geometry)

PolygonalExtracter.GetPolygonals<TCollection>(Geometry, TCollection)