myoval.java~13~

Java画版程序。......................要求变态。

package myshape;

/**
 * Title:
 * Description:
 * Copyright:    Copyright (c) 2002
 * Company:
 * @author
 * @version 1.0
 */
import java.awt.*;

public class MyOval extends MyShapeAdapter{

  public MyOval() {
  }
  private MyPoint startPoint,endPoint;
 //private int radius;

 public MyOval(MyPoint start,MyPoint end){
   startPoint=start;
   endPoint=end;
 }
 private Color color=defaultColor;
 public  void setColor(Color c){
   color=c;
 }
 public void paint(Graphics g){
   int width=endPoint.getX()-startPoint.getX();
   int height=endPoint.getY()-startPoint.getY();
   g.setColor(color);
   g.drawOval(startPoint.getX(),startPoint.getY(),width,height);
 }

  public MyShape getShape(){
   MyOval o=(MyOval)this.clone();
   o.startPoint=(MyPoint)startPoint.clone();
   o.endPoint=(MyPoint)endPoint.clone();
   //MyLine l=(MyLine)this.clone();
   //l.startPoint.moveObject(startPoint.getX()+4,centerPoint.getY()+4);
   //l.endPoint.moveObject(endPoint.getX()+4,endPoint.getY()+4);
   return o;
 }

 public void moveObject(MyShape s,int x,int y){
  MyPoint p1=(MyPoint)s;
  int tempx=centerPoint.getX()-x;
  int tempy=centerPoint.getY()-y;
  //System.out.print("sdfdksd  "+tempx);
  int x1=centerPoint.getX()-endPoint.getX();
  int y1=centerPoint.getY()-endPoint.getY();
  radius=(int)Math.sqrt(x1*x1+y1*y1);
  double tempr=Math.sqrt(tempx*tempx+tempy*tempy);
  p1.moveObject((int)(centerPoint.getX()-tempx/tempr*radius),(int)(centerPoint.getY()-tempy/tempr*radius));
 }


 public void moveObject(int x,int y){
   if(movedPoint!=null){
      if(!moveOval){
      // movedPoint.moveObject(x,y);
      }
      else{
        int tempx=x-movedPoint.getX();
        int tempy=y-movedPoint.getY();

        movedPoint=new MyPoint(x,y);
        startPoint.moveObject(tempx+startPoint.getX(),tempy+startPoint.getY());
        endPoint.moveObject(tempx+endPoint.getX(),tempy+endPoint.getY());
      }
   }

 }
 private MyPoint movedPoint;
 private boolean moveOval=true;
 public boolean getChanged(){return !moveOval;}

 public boolean nearTo(int x,int y){
 //centerPoint.attachToOthers=false;
  movedPoint=null;
  if(startPoint.nearTo(x,y)){
   //  centerPoint.attachToOthers=true;
     movedPoint=startPoint;
     moveOval=false;
     return  false;
  }
  if(endPoint.nearTo(x,y)){
     movedPoint=endPoint;
     moveOval=false;
     return false;
  }
  //centerPoint.attachToOthers=true;
  double a=(startPoint.getX()-endPoint.getX())/2.0;
  double b=(startPoint.getY()-endPoint.getY())/2.0;
  double tempx=x-(startPoint.getX()+a);
  double tempy=y-(startPoint.getY()+a);

 // tempx=(int)Math.sqrt(Math.abs(tempx-tempy));
 //
  tempx=tempx*tempx/(a*a)+tempy*tempy/(b*b)-1;
  //System.out.print("OK  "+tempx);
  if(tempx<10 && tempx>-10){
     movedPoint=new MyPoint(x,y);
     moveOval=true;
     return true;
  }
  return false;
 }
 public String toString(){
   String s="椭圆 ";
   return s;
  }
 public MyPoint getPoint(){
   return movedPoint;
 }
}