com.bbn.openmap.layer.shape
Class ESRIBoundingBox

java.lang.Object
  com.bbn.openmap.layer.shape.ESRIBoundingBox

public class ESRIBoundingBox
extends java.lang.Object

A bounding box is a rectangle that fully encloses some number of shapes. The rectangle is represented as four doubles, xmin ymin, xmax, and ymax.

To Do

• Make addPoint take two doubles to avoid unnecessarily consing ESRIPoints to add to the box.

Version:

$Revision: 1.3 $ $Date: 2004/10/14 18:06:04 $

Author:

Ray Tomlinson, Tom Mitchell

Field Summary

ESRIPoint	max The maximum point.
ESRIPoint	min The minimum point.

Constructor Summary

ESRIBoundingBox()
Initialize a null bounding box.

ESRIBoundingBox(double x, double y)
Initialize a bounding box from two doubles representing a point.

ESRIBoundingBox(ESRIPoint point)
Initialize a bounding box from a point.

ESRIBoundingBox(ESRIPoint _min, ESRIPoint _max)
Initialize a bounding box to encompass a minimum and maximum point.

Method Summary

void	addBounds(ESRIBoundingBox bb) Increase the extents of this bounding box to enclose the given bounding box.
void	addPoint(double x, double y)
void	addPoint(ESRIPoint point) Increase the extents of this bounding box to enclose the given point.
void	addPoints(ESRIPoint[] points) Increase the extents of this bounding box to enclose all of the given points.
boolean	equals(java.lang.Object obj) Determines equality with another bounding box
int	hashCode()

Methods inherited from class java.lang.Object

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

Field Detail

min

public ESRIPoint min

The minimum point.

max

public ESRIPoint max

The maximum point.

Constructor Detail

ESRIBoundingBox

public ESRIBoundingBox()

Initialize a null bounding box. All coordinates are set to zero.

ESRIBoundingBox

public ESRIBoundingBox(ESRIPoint point)

Initialize a bounding box from a point. The bounding box is initialized to encompass the given point.

Parameters:

point - the point to enclose

ESRIBoundingBox

public ESRIBoundingBox(double x,
                       double y)

Initialize a bounding box from two doubles representing a point. The bounding box is initialized to encompass the given location.

Parameters:

x - the x coordinate

y - the y coordinate

ESRIBoundingBox

public ESRIBoundingBox(ESRIPoint _min,
                       ESRIPoint _max)

Initialize a bounding box to encompass a minimum and maximum point. The bounding box is initialized to fully encompass both points.

Parameters:

_min - a point to enclose

_max - another point to enclose

Method Detail

addBounds

public void addBounds(ESRIBoundingBox bb)

Increase the extents of this bounding box to enclose the given bounding box.

Parameters:

bb - a bounding box to be enclosed

addPoints

public void addPoints(ESRIPoint[] points)

Increase the extents of this bounding box to enclose all of the given points.

Parameters:

points - a set of points to enclose

addPoint

public void addPoint(ESRIPoint point)

Increase the extents of this bounding box to enclose the given point.

Parameters:

point - a point to enclose

addPoint

public void addPoint(double x,
                     double y)

equals

public boolean equals(java.lang.Object obj)

Determines equality with another bounding box

Overrides:

equals in class java.lang.Object

Parameters:

obj - a candidate object

Returns:

true if obj is of type ESRIBoundingBox and the extents of that bounding box match this box's extents. false otherwise.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object