Class GeometryItemDistance

Hierarchy: Object , GeometryItemDistance

All Implemented Interfaces: ItemDistance

public class GeometryItemDistance
implements ItemDistance

An ItemDistance function for items which are Geometrys, using the Geometry.distance(Geometry) method.

To make this distance function suitable for using to query a single index tree, the distance metric is anti-reflexive. That is, if the two arguments are the same Geometry object, the distance returned is Double.MAX_VALUE.

Authors:: Martin Davis

public double distance(ItemBoundable item1, ItemBoundable item2)

Computes the distance between two Geometry items, using the Geometry.distance(Geometry) method.

Parameters:: item1 - item1 an item which is a Geometry; item2 - item2 an item which is a Geometry

Returns:: the distance between the geometries

Throws:: ClassCastException - ClassCastException if either item is not a Geometry