horstmann.ch08_graphed

Class PointNode

java.lang.Object

horstmann.ch08_graphed.PointNode

All Implemented Interfaces:

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

public class PointNode
extends java.lang.Object
implements Node

An inivisible node that is used in the toolbar to draw an edge.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PointNode() Constructs a point node with coordinates (0, 0)

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, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PointNode

public PointNode()

Constructs a point node with coordinates (0, 0)

Method Detail

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

clone

public java.lang.Object clone()

Specified by:

clone in interface Node

Overrides:

clone in class java.lang.Object