horstmann.ch08_graphed

Class CircleNode

java.lang.Object

horstmann.ch08_graphed.CircleNode

All Implemented Interfaces:

Node, java.io.Serializable, java.lang.Cloneable

public class CircleNode
extends java.lang.Object
implements Node

A circular node that is filled with a color.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private java.awt.Color	color
private static int	DEFAULT_SIZE
private double	size
private double	x
private double	y

Constructor Summary

Constructors

Constructor and Description
CircleNode(java.awt.Color aColor) Construct a circle node with a given size and color.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone()
boolean	contains(java.awt.geom.Point2D p) Tests whether the node contains a point.
void	draw(java.awt.Graphics2D g2) Draw the node.
java.awt.geom.Rectangle2D	getBounds() Get the bounding rectangle of the shape of this node
java.awt.geom.Point2D	getConnectionPoint(java.awt.geom.Point2D other) Get the best connection point to connect this node with another node.
void	translate(double dx, double dy) Translates the node by a given amount.

Methods inherited from class java.lang.Object

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

Field Detail

x

private double x

y

private double y

size

private double size

color

private java.awt.Color color

DEFAULT_SIZE

private static final int DEFAULT_SIZE

See Also:

Constant Field Values

Constructor Detail

CircleNode

public CircleNode(java.awt.Color aColor)

Construct a circle node with a given size and color.

Parameters:

aColor - the fill color

Method Detail

clone

public java.lang.Object clone()

Specified by:

clone in interface Node

Overrides:

clone in class java.lang.Object

draw

public void draw(java.awt.Graphics2D g2)

Description copied from interface: Node

Draw the node.

Specified by:

draw in interface Node

Parameters:

g2 - the graphics context

translate

public void translate(double dx,
                      double dy)

Description copied from interface: Node

Translates the node by a given amount.

Specified by:

translate in interface Node

Parameters:

dx - the amount to translate in the x-direction

dy - the amount to translate in the y-direction

contains

public boolean contains(java.awt.geom.Point2D p)

Description copied from interface: Node

Tests whether the node contains a point.

Specified by:

contains in interface Node

Parameters:

p - the point to test

Returns:

true if this node contains aPoint

getBounds

public java.awt.geom.Rectangle2D getBounds()

Description copied from interface: Node

Get the bounding rectangle of the shape of this node

Specified by:

getBounds in interface Node

Returns:

the bounding rectangle

getConnectionPoint

public java.awt.geom.Point2D getConnectionPoint(java.awt.geom.Point2D other)

Description copied from interface: Node

Get the best connection point to connect this node with another node. This should be a point on the boundary of the shape of this node.

Specified by:

getConnectionPoint in interface Node

Parameters:

other - an exterior point that is to be joined with this node

Returns:

the recommended connection point