myrect.java

本程序是程序设计第五版课后习题,实现画圆,画直线,画矩形

import java.awt.*;
public class Myrect extends Myshape
{
	private int xr,yr;

	
	public Myrect()
	{
		setMyrect(0,0);
	}
	
	public Myrect(int x1,int y1,int p,int x2,int y2)
	{
		super(x1,y1,p);
		setMyrect(x2,y2);
	}
	
	public void setMyrect(int x1,int y1)
	{
		xr = x1;
		yr = y1;
	}
	
	public int getxr()
	{
		return xr;
	}
	
	public int getyr()
	{
		return yr;
	}
	
	public void draw(Graphics g)
	{
		g.setColor(Color.magenta);
		if(super.getflag() ==0)
		g.drawRect(Math.min(super.getx(),getxr()),Math.min(super.gety(),getyr()),Math.abs(getxr()-super.getx()),Math.abs(getyr()-super.gety()));
		if(super.getflag() ==1)
		g.fillRect(Math.min(super.getx(),getxr()),Math.min(super.gety(),getyr()),Math.abs(getxr()-super.getx()),Math.abs(getyr()-super.gety()));
	}
	
	public String toSting()
	{
		return "point2:"+getxr()+","+getyr()+"]";
	}
}