com.vividsolutions.jts.index.quadtree
Class Key
java.lang.Object
com.vividsolutions.jts.index.quadtree.Key
public class Key
extends java.lang.Object
A Key is a unique identifier for a node in a quadtree.
It contains a lower-left point and a level number. The level number
is the power of two for the size of the node envelope
computeKey
public void computeKey(Envelope itemEnv)
return a square envelope containing the argument envelope,
whose extent is a power of two and which is based at a power of 2
computeQuadLevel
public static int computeQuadLevel(Envelope env)
getEnvelope
public Envelope getEnvelope()
getLevel
public int getLevel()