Package org.locationtech.jts.operation.overlayng

Class UnaryUnionNG

java.lang.Object

org.locationtech.jts.operation.overlayng.UnaryUnionNG

public class UnaryUnionNG
extends java.lang.Object

Unions a geometry or collection of geometries in an efficient way, using OverlayNG to ensure robust computation.

This class is most useful for performing UnaryUnion using a fixed-precision model. For unary union using floating precision, OverlayNGRobust.union(Geometry) should be used.

Author:

Martin Davis

See Also:

OverlayNGRobust

Method Summary

Modifier and Type	Method	Description
static Geometry	union(java.util.Collection<Geometry> geoms, GeometryFactory geomFact, PrecisionModel pm)	Unions a collection of geometries using a given precision model.
static Geometry	union(java.util.Collection<Geometry> geoms, PrecisionModel pm)	Unions a collection of geometries using a given precision model.
static Geometry	union(Geometry geom, PrecisionModel pm)	Unions a geometry (which is often a collection) using a given precision model.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

union

public static Geometry union(Geometry geom,
                             PrecisionModel pm)

Unions a geometry (which is often a collection) using a given precision model.

Parameters:

geom - the geometry to union

pm - the precision model to use

Returns:

the union of the geometry

union

public static Geometry union(java.util.Collection<Geometry> geoms,
                             PrecisionModel pm)

Unions a collection of geometries using a given precision model.

Parameters:

geoms - the collection of geometries to union

pm - the precision model to use

Returns:

the union of the geometries

union

public static Geometry union(java.util.Collection<Geometry> geoms,
                             GeometryFactory geomFact,
                             PrecisionModel pm)

Unions a collection of geometries using a given precision model.

Parameters:

geoms - the collection of geometries to union

geomFact - the geometry factory to use

pm - the precision model to use

Returns:

the union of the geometries