com.klg.jclass.util.swing
Class JCRectUtil

java.lang.Object
  |
  +--com.klg.jclass.util.swing.JCRectUtil

public class JCRectUtil

extends Object

JCRectUtil provides functions for computing the largest available rectangle from a list of rectangles.
Here is a brief summary of how to use it:

1. Initialize with a rectangle by calling rlInit(r, v), where r is the initializing rectangle and v is a blank vector.
2. Call rlRemove(r, v1, v2) to remove sub-rectangle r from the rectangles in the Vector of rectangles v1, placing the new list of rectangles in Vector v2. Repeat as necessary.
3. Call largestRect(v) to return the largest available rectangle from the passed-inVector of rectangles.

Field Summary

static int	LEFTTORIGHT
static int	TOPTOBOTTOM

Constructor Summary

JCRectUtil()

Method Summary

static Rectangle	largestRect(Vector rl) Determines the largest rectangle in the space represented by a list of non-overlapping rectangles.
static void	rlInit(Rectangle r, Vector rl) Initializes this rectangle list.
static void	rlRemove(Rectangle r, Vector rl1, Vector rl2) Removes rectangle r from rectlist rl1, storing the result in rl2.

Methods inherited from class java.lang.Object

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

Field Detail

LEFTTORIGHT

public static final int LEFTTORIGHT

See Also:

Constant Field Values

TOPTOBOTTOM

public static final int TOPTOBOTTOM

See Also:

Constant Field Values

Constructor Detail

JCRectUtil

public JCRectUtil()

Method Detail

rlInit

public static void rlInit(Rectangle r,
                          Vector rl)

Initializes this rectangle list.

Parameters:

r - rectangle to intialize this list with

rl - rectangle list, a vector, to initialize

Since:

JClass 4.0K for Java 2. If you are using JClass 4.0J, which is based on JDK 1.1, this method's parameter must be a com.sun.java.util.collections.Vector.

rlRemove

public static void rlRemove(Rectangle r,
                            Vector rl1,
                            Vector rl2)

Removes rectangle r from rectlist rl1, storing the result in rl2.

Parameters:

r - rectangle to remove

rl1 - rectangle list, a vector, to remove rectangle from

rl2 - rectangle list, a vector, to place result in

largestRect

public static Rectangle largestRect(Vector rl)

Determines the largest rectangle in the space represented by a list of non-overlapping rectangles.

Parameters:

rl - the list of rectangles, in vector form, to use for the calculation

Returns:

the largest rectangle in the list