Package org.geotools.geometry

Class AbstractEnvelope

Object

AbstractEnvelope

All Implemented Interfaces:

Envelope

Direct Known Subclasses:

GeneralEnvelope

public abstract class AbstractEnvelope
extends Object
implements Envelope

Base class for envelope implementations. This base class provides default implementations for toString(), equals(java.lang.Object) and hashCode() methods.

This class do not holds any state. The decision to implement Serializable or org.geotools.util.Cloneable interfaces is left to implementors.

Since:

2.4

Author:

Martin Desruisseaux (IRD)

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractEnvelope()	Constructs an envelope.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object object)	Returns true if the specified object is also an envelope with equals coordinates and CRS.
DirectPosition	getLowerCorner()	A coordinate position consisting of all the minimal ordinates.
DirectPosition	getUpperCorner()	A coordinate position consisting of all the maximal ordinates.
int	hashCode()	Returns a hash value for this envelope.
String	toString()	Returns a string representation of this envelope.

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Envelope

getCoordinateReferenceSystem, getDimension, getMaximum, getMedian, getMinimum, getSpan

Constructor Detail

AbstractEnvelope

protected AbstractEnvelope()

Constructs an envelope.

Method Detail

getLowerCorner

public DirectPosition getLowerCorner()

A coordinate position consisting of all the minimal ordinates. The default implementation returns a direct position backed by this envelope, so changes in this envelope will be immediately reflected in the direct position.

Specified by:

getLowerCorner in interface Envelope

Returns:

The lower corner.

getUpperCorner

public DirectPosition getUpperCorner()

A coordinate position consisting of all the maximal ordinates. The default implementation returns a direct position backed by this envelope, so changes in this envelope will be immediately reflected in the direct position.

Specified by:

getUpperCorner in interface Envelope

Returns:

The upper corner.

toString

public String toString()

Returns a string representation of this envelope. The default implementation returns a string containing lower corner coordinates first, followed by upper corner coordinates. Other informations like the CRS or class name may or may not be presents at implementor choice.

This string is okay for occasional formatting (for example for debugging purpose). But if there is a lot of envelopes to format, users will get more control by using their own instance of CoordinateFormat.

Overrides:

toString in class Object

hashCode

public int hashCode()

Returns a hash value for this envelope.

Overrides:

hashCode in class Object

equals

public boolean equals(Object object)

Returns true if the specified object is also an envelope with equals coordinates and CRS.

Overrides:

equals in class Object

Parameters:

object - The object to compare with this envelope.

Returns:

true if the given object is equals to this envelope.