geos::operation::cluster::EnvelopeDistanceClusterFinder Class Reference

#include <EnvelopeDistanceClusterFinder.h>

Inheritance diagram for geos::operation::cluster::EnvelopeDistanceClusterFinder:

Public Member Functions
	EnvelopeDistanceClusterFinder (double d)
Public Member Functions inherited from geos::operation::cluster::AbstractClusterFinder
Clusters	cluster (const std::vector< const geom::Geometry * > &g)
std::vector< std::unique_ptr< geom::Geometry > >	clusterToVector (std::unique_ptr< geom::Geometry > &&g)
std::vector< std::unique_ptr< geom::Geometry > >	clusterToVector (const geom::Geometry &g)
std::unique_ptr< geom::Geometry >	clusterToCollection (std::unique_ptr< geom::Geometry > &&g)
std::unique_ptr< geom::Geometry >	clusterToCollection (const geom::Geometry &g)

Protected Member Functions
const geom::Envelope &	queryEnvelope (const geom::Geometry *a) override
bool	shouldJoin (const geom::Geometry *a, const geom::Geometry *b) override
Protected Member Functions inherited from geos::operation::cluster::AbstractClusterFinder
virtual Clusters	process (const std::vector< const geom::Geometry * > &components, index::strtree::TemplateSTRtree< std::size_t > &index, UnionFind &uf)

Detailed Description

EnvelopeDistanceClusterFinder clusters geometries by the distance between their envelopes. Any two geometries whose envelopes are within the specified distance will be included in the same cluster.

Member Function Documentation

queryEnvelope()

const geom::Envelope & geos::operation::cluster::EnvelopeDistanceClusterFinder::queryEnvelope ( const geom::Geometry *  a )

inlineoverrideprotectedvirtual

Provide an query Envelope that can be used to find all geometries possibly in the same cluster as the input.

Parameters

a

Geometry

Returns

an Envelope suitable for querying

Implements geos::operation::cluster::AbstractClusterFinder.

References geos::geom::Envelope::expandBy(), and geos::geom::Geometry::getEnvelopeInternal().

shouldJoin()

bool geos::operation::cluster::EnvelopeDistanceClusterFinder::shouldJoin ( const geom::Geometry *  a, const geom::Geometry *  b  )

inlineoverrideprotectedvirtual

Determine whether two geometries should be considered in the same cluster.

Parameters

a	Geometry
b	Geometry

Returns

true if the clusters associated with a and b should be merged.

Implements geos::operation::cluster::AbstractClusterFinder.

References geos::geom::Envelope::distanceSquared(), and geos::geom::Geometry::getEnvelopeInternal().

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

• EnvelopeDistanceClusterFinder.h