# Package org.apache.lucene.spatial.util

package org.apache.lucene.spatial.util
Advanced spatial utilities.

Related Packages
Package
Description
org.apache.lucene.spatial
Lucene advanced spatial search
Classes
Class
Description
CachingDoubleValueSource
Caches the doubleVal of another value source in a HashMap so that it is computed only once.
DistanceToShapeValueSource
The distance from a provided Point to a Point retrieved from an ShapeValuesSource.
ReciprocalDoubleValuesSource
Transforms a DoubleValuesSource using the formula v = k / (v + k)
ShapeAreaValueSource
The area of a Shape retrieved from an ShapeValuesSource
ShapeFieldCache<T extends org.locationtech.spatial4j.shape.Shape>
Bounded Cache of Shapes associated with docIds.
ShapeFieldCacheDistanceValueSource
A DoubleValuesSource that returns the spatial distance between an input point and a document's points in `ShapeFieldCacheProvider`.
ShapeFieldCacheProvider<T extends org.locationtech.spatial4j.shape.Shape>
Provides access to a `ShapeFieldCache` for a given `LeafReader`.
ShapeValuesPredicate
Compares a shape from a provided `ShapeValuesSource` with a given Shape and sees if it matches a given `SpatialOperation` (the predicate).