geos::operation::geounion::CascadedUnion Class Reference

Provides an efficient method of unioning a collection of Geometries. More...

#include <CascadedUnion.h>

List of all members.

Public Member Functions
	CascadedUnion (const std::vector< geom::Geometry * > *geoms)
geom::Geometry *	Union ()
Static Public Member Functions
static geom::Geometry *	Union (std::vector< geom::Geometry * > *geoms)
template<class T>
static geom::Geometry *	Union (T start, T end)

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Detailed Description

Provides an efficient method of unioning a collection of Geometries.

This algorithm is more robust than the simple iterated approach of repeatedly unioning each geometry to a result geometry.

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Constructor & Destructor Documentation

geos::operation::geounion::CascadedUnion::CascadedUnion

(

const std::vector< geom::Geometry * > *

geoms

)

[inline]

Creates a new instance to union the given collection of Geometrys.

Parameters:

geoms

a collection of Geometryal Geometrys ownership of elements _and_ vector are left to caller.

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Member Function Documentation

geom::Geometry* geos::operation::geounion::CascadedUnion::Union

(

)

Computes the union of the input geometries.

Returns:

the union of the input geometries

null if no input geometries were provided

template<class T>

static geom::Geometry* geos::operation::geounion::CascadedUnion::Union	(	T	start,
		T	end
	)			[inline, static]

Computes the union of a set of Geometrys.

T an iterator yelding something castable to const Geometry *

Parameters:

	start	start iterator
	end	end iterator

static geom::Geometry* geos::operation::geounion::CascadedUnion::Union

(

std::vector< geom::Geometry * > *

geoms

)

[static]

Computes the union of a collection of Geometrys.

Parameters:

geoms

a collection of Geometrys. ownership of elements _and_ vector are left to caller.

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

• CascadedUnion.h

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