org.universAAL.tools.logmonitor.rdfvis

Class Edge

java.lang.Object

org.universAAL.tools.logmonitor.rdfvis.Edge

All Implemented Interfaces:

Comparable<Object>

public class Edge
extends Object
implements Comparable<Object>

An edge in the graphical view connecting two nodes. Every Resource corresponds to a Node in the visualization and every property to an Edge.

Author:

Carsten Stockloew

Field Summary

Fields

Modifier and Type	Field and Description
boolean	visited True, if the child node has been visited before.

Method Summary

Modifier and Type	Method and Description
int	compareTo(Object o) Compares this object with the specified object for order.
static void	drawArrow(Graphics2D g, int x, int y, int xx, int yy) Draws an arrow on the given Graphics2D context.
Point	drawEdge(Graphics2D g, Node parent, int x, int y, int currentWidth) Draw this edge (draw an arrow from the parent node to the child node).
Node	getChild() Get the child node of this object.

Methods inherited from class java.lang.Object

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

Field Detail

visited

public boolean visited

True, if the child node has been visited before.

Method Detail

getChild

public Node getChild()

Get the child node of this object.

Returns:

The child.

drawEdge

public Point drawEdge(Graphics2D g,
                      Node parent,
                      int x,
                      int y,
                      int currentWidth)

Draw this edge (draw an arrow from the parent node to the child node).

Parameters:

g - The graphics to draw to.

parent - The parent node.

x - The x-coordinate of the starting point.

y - The y-coordinate of the starting point.

currentWidth - The current width (i.e. the right edge) of all node drawn before. This is used for links to already visited nodes to prevent drawing over an existing node.

Returns:

The bottom-right corner.

drawArrow

public static void drawArrow(Graphics2D g,
                             int x,
                             int y,
                             int xx,
                             int yy)

Draws an arrow on the given Graphics2D context.

Parameters:

g - The Graphics2D context to draw on.

x - The x location of the "tail" of the arrow.

y - The y location of the "tail" of the arrow.

xx - The x location of the "head" of the arrow.

yy - The y location of the "head" of the arrow.

compareTo

public int compareTo(Object o)

Compares this object with the specified object for order.

Specified by:

compareTo in interface Comparable<Object>

Parameters:

o - The Object to be compared.

Returns:

A negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object.