org.garret.perst
Class Rectangle

java.lang.Object
  org.garret.perst.Rectangle

All Implemented Interfaces:

java.lang.Cloneable, IValue

public class Rectangle
extends java.lang.Object
implements IValue, java.lang.Cloneable

R2 rectangle class. This class is used in spatial index.

Constructor Summary

Rectangle()
Default constructor for PERST

Rectangle(int top, int left, int bottom, int right)
Construct rectangle with specified coordinates

Rectangle(Rectangle r)
Create copy of the rectangle

Method Summary

long	area() Rectangle area
java.lang.Object	clone() Clone rectangle
boolean	contains(Rectangle r) Checks if this rectangle contains the specified rectangle
boolean	equals(java.lang.Object o) Check if two rectangles are equal
int	getBottom() Greatest Y coordinate of the rectangle
int	getLeft() Smallest X coordinate of the rectangle
int	getRight() Greatest X coordinate of the rectangle
int	getTop() Smallest Y coordinate of the rectangle
int	hashCode() Hash code consists of all rectangle coordinates
boolean	intersects(Rectangle r) Checks if this rectangle intersects with specified rectangle
void	join(Rectangle r) Join two rectangles.
static Rectangle	join(Rectangle a, Rectangle b) Non destructive join of two rectangles.
static long	joinArea(Rectangle a, Rectangle b) Area of covered rectangle for two sepcified rectangles
java.lang.String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Rectangle

public Rectangle()

Default constructor for PERST

Rectangle

public Rectangle(int top,
                 int left,
                 int bottom,
                 int right)

Construct rectangle with specified coordinates

Rectangle

public Rectangle(Rectangle r)

Create copy of the rectangle

Method Detail

area

public final long area()

Rectangle area

clone

public java.lang.Object clone()

Clone rectangle

Overrides:

clone in class java.lang.Object

contains

public final boolean contains(Rectangle r)

Checks if this rectangle contains the specified rectangle

equals

public boolean equals(java.lang.Object o)

Check if two rectangles are equal

Overrides:

equals in class java.lang.Object

getBottom

public final int getBottom()

Greatest Y coordinate of the rectangle

getLeft

public final int getLeft()

Smallest X coordinate of the rectangle

getRight

public final int getRight()

Greatest X coordinate of the rectangle

getTop

public final int getTop()

Smallest Y coordinate of the rectangle

hashCode

public int hashCode()

Hash code consists of all rectangle coordinates

Overrides:

hashCode in class java.lang.Object

intersects

public final boolean intersects(Rectangle r)

Checks if this rectangle intersects with specified rectangle

join

public final void join(Rectangle r)

Join two rectangles. This rectangle is updates to contain cover of this and specified rectangle.

Parameters:

r - rectangle to be joined with this rectangle

join

public static Rectangle join(Rectangle a,
                             Rectangle b)

Non destructive join of two rectangles.

Parameters:

a - first joined rectangle

b - second joined rectangle

Returns:

rectangle containing cover of these two rectangles

joinArea

public static long joinArea(Rectangle a,
                            Rectangle b)

Area of covered rectangle for two sepcified rectangles

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object