netnode.java

一个RIP协议模拟程序..在一个工作空间之内画上一些路由跟网络,再画上它们之间的连线.系统后台用一个线程实现模拟路由发送路由表信息.输出路由表的更新内容跟过程.

package network;

import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.util.ArrayList;

public class NetNode {
	private ArrayList links;
	private String netName;
	private int status;
	public static final int distroy=0;
	public static final int ative=1;
	private static int i=0;

	private Ellipse2D bounds;
	private static final double width=30,height=30;
	private static final Color p=Color.magenta;
	private double locX,locY;
	
	public NetNode(Point2D p){
		links=new ArrayList();
		netName="net"+i;
		i++;
		status=NetNode.ative;

		locX=p.getX();
		locY=p.getY();
		bounds=new Ellipse2D.Double(p.getX(),p.getY(),width,height);
	}
	public ArrayList getLinks() {
		return links;
	}
	public void setLinks(ArrayList links) {
		this.links = links;
	}
	public String getNetName() {
		return netName;
	}
	public void setNetName(String netName) {
		this.netName = netName;
	}
	public int getStatus() {
		return status;
	}
	public void setStatus(int status) {
		this.status = status;
	}
	public void addLink(Link l){
		links.add(l);
	}

	/**
	 * 把结点移到一个给定的地方
	 * @param x 结点在X轴方向移动的距离
	 * @param y 结点在Y轴方向移动的距离
	 * */
	public void translate(double x,double y){
		locX+=x;
		locY+=y;
		bounds=new Ellipse2D.Double(locX,locY,width,height);
	}
	
	public void draw(Graphics2D g2d){
		Color oldColor=g2d.getColor();
		if(status==NetNode.distroy){
			g2d.setColor(Color.black);
		}
		else
			g2d.setColor(p);
			
		g2d.fill(bounds);
		g2d.setColor(oldColor);
		g2d.drawString(netName,(float)locX, (float)locY);
	}
	
	/**
	 *判断p是否在这个结点的范围之内.
	 *@param p 是一个Point2D实例,存储者一个点的坐标
	 *@return 如果这个结点包含这个坐标返回真
	 * */
	public boolean contains(Point2D p){
		return bounds.contains(p);
	}
	public Rectangle2D getBounds() {
		return bounds.getBounds();
	}
	public void setBounds(Ellipse2D bounds) {
		this.bounds = bounds;
	}
	
	public boolean equals(Object o){
		if(o==null){
			return false;
			
		}
		if(o instanceof NetNode){
			NetNode net=(NetNode)o;
			if(net.getNetName().equals(netName)){
				return true;
			}
		}
		
		
		return false;
	}
}