Class FunctionsUtil

Namespace

NetTopologySuite.Utilities

Assembly

NetTopologySuite.dll

A utility class to get GeometryFactorys, Envelopes off of Geometrys or to build aggregate geometries.

public class FunctionsUtil

Inheritance

object

FunctionsUtil

Inherited Members

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Constructors

FunctionsUtil()

public FunctionsUtil()

Fields

DefaultEnvelope

Gets a default envelope

public static readonly Envelope DefaultEnvelope

Field Value

Envelope

Methods

BuildGeometry(Geometry, Geometry)

Method to build a geometry.

public static Geometry BuildGeometry(Geometry a, Geometry b)

Parameters

a Geometry

A geometry

b Geometry

A geometry

Returns

Geometry

A GEOMETRYCOLLECTION containing a and b.

BuildGeometry(params Geometry[])

Method to build a geometry.

public static Geometry BuildGeometry(params Geometry[] geoms)

Parameters

geoms Geometry[]

An array of geometries

Returns

Geometry

A GEOMETRYCOLLECTION containing geoms.

BuildGeometry(IList<Geometry>, Geometry)

Builds a geometry from a list of geometries.

The function returns

• nullif the list is null or empty
• geoms[0]if the list contains one single item.
• a GeometryCollection
• a Multi-geometry

public static Geometry BuildGeometry(IList<Geometry> geoms, Geometry parentGeom)

Parameters

geoms IList<Geometry>

A list of geometries.

parentGeom Geometry

A parent geometry

Returns

Geometry

A geometry.

BuildGeometry(List<Geometry>, Geometry)

Builds a geometry from a list of geometries.

The function returns

• nullif the list is null or empty
• geoms[0]if the list contains one single item.
• a GeometryCollection
• a Multi-geometry

[Obsolete]
public static Geometry BuildGeometry(List<Geometry> geoms, Geometry parentGeom)

Parameters

geoms List<Geometry>

A list of geometries.

parentGeom Geometry

A parent geometry

Returns

Geometry

A geometry.

GetEnvelopeOrDefault(Geometry)

Gets the envelope of a geometry.

public static Envelope GetEnvelopeOrDefault(Geometry g)

Parameters

g Geometry

A geometry

Returns

Envelope

The envelope of g or DefaultEnvelope if g == null.

GetFactoryOrDefault(Geometry)

Function to get the geometry factory of a geometry. If g is null, a default geometry factory is returned.

public static GeometryFactory GetFactoryOrDefault(Geometry g)

Parameters

g Geometry

A geometry

Returns

GeometryFactory

A geometry factory

GetFactoryOrDefault(IEnumerable<Geometry>)

Function to get the geometry factory of the first geometry in a series of geometries.

If no geometry is provided in gs, a default geometry factory is returned.

public static GeometryFactory GetFactoryOrDefault(IEnumerable<Geometry> gs)

Parameters

gs IEnumerable<Geometry>

An enumeration of geometries

Returns

GeometryFactory

A geometry factory