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## com.vividsolutions.jts.index.bintree
Class Bintree

    java.lang.Object
      com.vividsolutions.jts.index.bintree.Bintree

    public class Bintree

extends java.lang.Object

An `BinTree` (or "Binary Interval Tree") is a 1-dimensional version of a quadtree. It indexes 1-dimensional intervals (which may be the projection of 2-D objects on an axis). It supports range searching (where the range may be a single point). This structure is dynamic - new items can be added at any time, and it will support deletion of items (although this is not currently implemented).

This implementation does not require specifying the extent of the inserted items beforehand. It will automatically expand to accomodate any extent of dataset.

The bintree structure is used to provide a primary filter for interval queries. The query() method returns a list of all objects which may intersect the query interval. Note that it may return objects which do not in fact intersect. A secondary filter is required to test for exact intersection. Of course, this secondary filter may consist of other tests besides intersection, such as testing other kinds of spatial relationships.

This index is different to the Interval Tree of Edelsbrunner or the Segment Tree of Bentley.

Version:
  1.7

Constructor Summary
`Bintree()`

Method Summary
`int` | `depth()`
`static Interval` | `ensureExtent(Interval itemInterval, double minExtent)` Ensure that the Interval for the inserted item has non-zero extents.
`void` | `insert(Interval itemInterval, java.lang.Object item)`
`java.util.Iterator` | `iterator()`
`int` | `nodeSize()` Compute the total number of nodes in the tree
`java.util.List` | `query(double x)`
`java.util.List` | `query(Interval interval)` Queries the tree to find all candidate items which may overlap the query interval.
`void` | `query(Interval interval, java.util.Collection foundItems)` Adds items in the tree which potentially overlap the query interval to the given collection.
`boolean` | `remove(Interval itemInterval, java.lang.Object item)` Removes a single item from the tree.
`int` | `size()`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### Bintree

    public Bintree()

Method Detail

### ensureExtent

    public static Interval ensureExtent(Interval itemInterval,
                                        double minExtent)

  Ensure that the Interval for the inserted item has non-zero extents. Use the current minExtent to pad it, if necessary

### depth

    public int depth()

### size

    public int size()

### nodeSize

    public int nodeSize()

  Compute the total number of nodes in the tree

  Returns:
    the number of nodes in the tree

### insert

    public void insert(Interval itemInterval,
                       java.lang.Object item)

### remove

    public boolean remove(Interval itemInterval,
                          java.lang.Object item)

  Removes a single item from the tree.

  Parameters:
    `itemEnv` - the Envelope of the item to be removed
    `item` - the item to remove
  Returns:
    `true` if the item was found (and thus removed)

### iterator

    public java.util.Iterator iterator()

### query

    public java.util.List query(double x)

### query

    public java.util.List query(Interval interval)

  Queries the tree to find all candidate items which may overlap the query interval. If the query interval is `null`, all items in the tree are found. min and max may be the same value

### query

    public void query(Interval interval,
                      java.util.Collection foundItems)

  Adds items in the tree which potentially overlap the query interval to the given collection. If the query interval is `null`, add all items in the tree.

  Parameters:
    `interval` - a query nterval, or null
    `resultItems` - the candidate items found

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