horstmann.ch08_graphed2

Interface Edge

All Superinterfaces:

java.lang.Cloneable, java.io.Serializable

All Known Implementing Classes:

AbstractEdge, LineEdge

public interface Edge
extends java.io.Serializable, java.lang.Cloneable

An edge in a graph.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone()
void	connect(Node aStart, Node anEnd) Connects this edge to two nodes.
boolean	contains(java.awt.geom.Point2D aPoint) Tests whether the edge contains a point.
void	draw(java.awt.Graphics2D g2) Draw the edge.
java.awt.geom.Rectangle2D	getBounds(java.awt.Graphics2D g2) Gets the smallest rectangle that bounds this edge.
java.awt.geom.Line2D	getConnectionPoints() Gets the points at which this edge is connected to its nodes.
Node	getEnd() Gets the ending node.
Node	getStart() Gets the starting node.

Method Detail

draw

void draw(java.awt.Graphics2D g2)

Draw the edge.

Parameters:

g2 - the graphics context

contains

boolean contains(java.awt.geom.Point2D aPoint)

Tests whether the edge contains a point.

Parameters:

aPoint - the point to test

Returns:

true if this edge contains aPoint

connect

void connect(Node aStart,
             Node anEnd)

Connects this edge to two nodes.

Parameters:

aStart - the starting node

anEnd - the ending node

getStart

Node getStart()

Gets the starting node.

Returns:

the starting node

getEnd

Node getEnd()

Gets the ending node.

Returns:

the ending node

getConnectionPoints

java.awt.geom.Line2D getConnectionPoints()

Gets the points at which this edge is connected to its nodes.

Returns:

a line joining the two connection points

getBounds

java.awt.geom.Rectangle2D getBounds(java.awt.Graphics2D g2)

Gets the smallest rectangle that bounds this edge. The bounding rectangle contains all labels.

Returns:

the bounding rectangle

clone

java.lang.Object clone()