# Package org.apache.lucene.spatial.util

Advanced spatial utilities.

See: Description

- Class Summary
  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).

## Package org.apache.lucene.spatial.util Description

Advanced spatial utilities.

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