geos::geom::util::GeometryCombiner Class Reference

Combines Geometrys to produce a GeometryCollection of the most appropriate type. More...

#include <GeometryCombiner.h>

Public Member Functions
	GeometryCombiner (std::vector< const Geometry * > const &geoms)
	Creates a new combiner for a collection of geometries.
	GeometryCombiner (std::vector< std::unique_ptr< Geometry > > &&geoms)
GeometryFactory const *	extractFactory () const
	Extracts the GeometryFactory used by the geometries in a collection.
std::unique_ptr< Geometry >	combine ()
	Computes the combination of the input geometries to produce the most appropriate Geometry or GeometryCollection.
void	setSkipEmpty (bool)
	Set a flag indicating that empty geometries should be omitted from the result.
	GeometryCombiner (const GeometryCombiner &other)=delete
GeometryCombiner &	operator= (const GeometryCombiner &rhs)=delete

Static Public Member Functions
static std::unique_ptr< Geometry >	combine (std::vector< const Geometry * > const &geoms)
	Copies a collection of geometries and combines the result.
static std::unique_ptr< Geometry >	combine (std::vector< std::unique_ptr< Geometry > > &&geoms)
	Combines a collection of geometries.
static std::unique_ptr< Geometry >	combine (const Geometry *g0, const Geometry *g1)
	Copies two geometries and combines the result.
static std::unique_ptr< Geometry >	combine (std::unique_ptr< Geometry > &&g0, std::unique_ptr< Geometry > &&g1)
	Combines two geometries.
static std::unique_ptr< Geometry >	combine (const Geometry *g0, const Geometry *g1, const Geometry *g2)
	Copies three geometries and combines the result.
static std::unique_ptr< Geometry >	combine (std::unique_ptr< Geometry > &&g0, std::unique_ptr< Geometry > &&g1, std::unique_ptr< Geometry > &&g2)
	Combines three geometries.

Detailed Description

Combines Geometrys to produce a GeometryCollection of the most appropriate type.

Input geometries which are already collections will have their elements extracted first. No validation of the result geometry is performed. (The only case where invalidity is possible is where polygonal geometries are combined and result in a self-intersection).

See also

GeometryFactory::buildGeometry

Constructor & Destructor Documentation

GeometryCombiner()

geos::geom::util::GeometryCombiner::GeometryCombiner ( std::vector< const Geometry * > const &  geoms )

explicit

Creates a new combiner for a collection of geometries.

Parameters

geoms

the geometries to combine

Member Function Documentation

combine() [1/7]

std::unique_ptr< Geometry > geos::geom::util::GeometryCombiner::combine

(

)

Computes the combination of the input geometries to produce the most appropriate Geometry or GeometryCollection.

Returns

a Geometry which is the combination of the inputs

combine() [2/7]

static std::unique_ptr< Geometry > geos::geom::util::GeometryCombiner::combine ( const Geometry *  g0, const Geometry *  g1  )

static

Copies two geometries and combines the result.

Parameters

g0	a geometry to combine (ownership left to caller)
g1	a geometry to combine (ownership left to caller)

Returns

the combined geometry

combine() [3/7]

static std::unique_ptr< Geometry > geos::geom::util::GeometryCombiner::combine ( const Geometry *  g0, const Geometry *  g1, const Geometry *  g2  )

static

Copies three geometries and combines the result.

Parameters

g0	a geometry to combine (ownership left to caller)
g1	a geometry to combine (ownership left to caller)
g2	a geometry to combine (ownership left to caller)

Returns

the combined geometry

combine() [4/7]

static std::unique_ptr< Geometry > geos::geom::util::GeometryCombiner::combine ( std::unique_ptr< Geometry > &&  g0, std::unique_ptr< Geometry > &&  g1  )

static

Combines two geometries.

Parameters

g0	a geometry to combine (ownership transferred to combined geometry)
g1	a geometry to combine (ownership transferred to combined geometry)

Returns

the combined geometry

combine() [5/7]

static std::unique_ptr< Geometry > geos::geom::util::GeometryCombiner::combine ( std::unique_ptr< Geometry > &&  g0, std::unique_ptr< Geometry > &&  g1, std::unique_ptr< Geometry > &&  g2  )

static

Combines three geometries.

Parameters

g0	a geometry to combine (ownership transferred to combined geometry)
g1	a geometry to combine (ownership transferred to combined geometry)
g2	a geometry to combine (ownership transferred to combined geometry)

Returns

the combined geometry

combine() [6/7]

static std::unique_ptr< Geometry > geos::geom::util::GeometryCombiner::combine ( std::vector< const Geometry * > const &  geoms )

static

Copies a collection of geometries and combines the result.

Parameters

geoms

the geometries to combine (ownership left to caller)

Returns

the combined geometry

combine() [7/7]

static std::unique_ptr< Geometry > geos::geom::util::GeometryCombiner::combine ( std::vector< std::unique_ptr< Geometry > > &&  geoms )

static

Combines a collection of geometries.

Parameters

geoms

the geometries to combine (ownership transferred to combined geometry)

Returns

the combined geometry

extractFactory()

GeometryFactory const * geos::geom::util::GeometryCombiner::extractFactory

(

)

const

Extracts the GeometryFactory used by the geometries in a collection.

Returns

a GeometryFactory

---

The documentation for this class was generated from the following file:

• GeometryCombiner.h