#include <GeometryMapper.h>

Public Types
typedef std::function< std::unique_ptr< Geometry >(const Geometry &)>	mapOp

Static Public Member Functions
static std::unique_ptr< Geometry >	map (const Geometry &geom, mapOp op)

static std::unique_ptr< Geometry >	flatMap (const Geometry &geom, int emptyDim, mapOp op)

Detailed Description

Methods to map various collections of Geometrys via defined mapping functions.

Author: Martin Davis

Member Typedef Documentation

◆ mapOp

typedef std::function<std::unique_ptr<Geometry>(const Geometry&)> geos::geom::util::GeometryMapper::mapOp

An interface for geometry functions that map a geometry input to a geometry output. The output may be nullptr if there is no valid output value for the given input value.

Member Function Documentation

◆ flatMap()

static std::unique_ptr< Geometry > geos::geom::util::GeometryMapper::flatMap	(	const Geometry &	geom,
		int	emptyDim,
		mapOp	op
	)

static

Maps the atomic elements of a Geometry (which may be atomic or composite) using a mapOp mapping operation into an atomic Geometry or a flat collection of the most specific type. null and empty values returned from the mapping operation are discarded.

Parameters

geom	the geometry to map
emptyDim	the dimension of empty geometry to create
op	the mapping operation

Returns: the mapped result

◆ map()

static std::unique_ptr< Geometry > geos::geom::util::GeometryMapper::map	(	const Geometry &	geom,
		mapOp	op
	)

static

Maps the members of a Geometry (which may be atomic or composite) into another Geometry of most specific type. null results are skipped. In the case of hierarchical GeometryCollections, only the first level of members are mapped.