org.locationtech.jtslab

Class OverlayOptFunctions

java.lang.Object

org.locationtech.jtslab.OverlayOptFunctions

public class OverlayOptFunctions
extends Object

Functions to test using spatial predicates as a filter in front of overlay operations to optimize performance.

Author:

Martin Davis

Constructor Summary

Constructors

Constructor and Description
OverlayOptFunctions()

Method Summary

Modifier and Type	Method and Description
static org.locationtech.jts.geom.Geometry	intersectionOpt(org.locationtech.jts.geom.Geometry a, org.locationtech.jts.geom.Geometry b) Use spatial predicates as a filter in front of intersection.
static org.locationtech.jts.geom.Geometry	intersectionOptPrep(org.locationtech.jts.geom.Geometry a, org.locationtech.jts.geom.Geometry b) Use prepared geometry spatial predicates as a filter in front of intersection, with the first operand prepared.

Methods inherited from class java.lang.Object

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

Constructor Detail

OverlayOptFunctions

public OverlayOptFunctions()

Method Detail

intersectionOpt

public static org.locationtech.jts.geom.Geometry intersectionOpt(org.locationtech.jts.geom.Geometry a,
                                                                 org.locationtech.jts.geom.Geometry b)

Use spatial predicates as a filter in front of intersection.

Parameters:

a - a geometry

b - a geometry

Returns:

the intersection of the geometries

intersectionOptPrep

public static org.locationtech.jts.geom.Geometry intersectionOptPrep(org.locationtech.jts.geom.Geometry a,
                                                                     org.locationtech.jts.geom.Geometry b)

Use prepared geometry spatial predicates as a filter in front of intersection, with the first operand prepared.

Parameters:

a - a geometry to prepare

b - a geometry

Returns:

the intersection of the geometries