import java.awt.*;
import javax.swing.*;
import java.util.*;
import java.text.*;

public class TestRectangle2DGUI {

    private JFrame outputFrame;
    private Container container;
    private Rectangle2DDrawingPanel rectangle2DsDrawingPanel; 

    public static void main(String[] args) {
        new TestRectangle2DGUI();
    }

    public TestRectangle2DGUI() {
        //stuff to make a frame and drawing panel:
        outputFrame = new JFrame();
        outputFrame.setSize(1000,700);
        outputFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	rectangle2DsDrawingPanel = new Rectangle2DDrawingPanel();  
    	rectangle2DsDrawingPanel.setBackground(Color.WHITE);
    	outputFrame.getContentPane().add( rectangle2DsDrawingPanel);
    	outputFrame.setVisible(true);
    	
    	 
        int N, points;
        DecimalFormat d2 = new DecimalFormat ("0.00");

	String input = JOptionPane.showInputDialog( "Enter number of rectangles", "100" );
	N = Integer.parseInt( input );         

	input = JOptionPane.showInputDialog( "Enter number of points", "100" );
	points = Integer.parseInt( input );         

        Rectangle2D [] cA = new Rectangle2D[N];   //array of Rectangle2D references
    
        cA[0] = new Rectangle2D();   //unit rectangle
        cA[1] = new Rectangle2D(0,0, 20,20); //20x20 at origin
        cA[2] = new Rectangle2D(50,50, 30,60);   //30x60 at (50,50)
        cA[3] = new Rectangle2D(150,250, 50,10); //50x10 at (150,250)
        cA[4] = new Rectangle2D(110,60, 200,100); //200x100 at (110,60)
        
        for (int i=5; i<cA.length; i++)
            //randomly centered, randomly sized up to 100x100
            cA[i] = new Rectangle2D((int)(Math.random()*outputFrame.getWidth()),
            	                    (int)(Math.random()*outputFrame.getHeight()),
            	                    Math.random()*100, Math.random()*100);
    
        for (int i=0; i<cA.length; i++)
            System.out.println("area:" + d2.format(cA[i].getArea())
    	     	 + " perimeter:" + d2.format(cA[i].getPerimeter()));

        System.out.println("Number of Rectangle2D objects created: "+Rectangle2D.getNumberOfObjects());
 
 	//fill Point array with random points
        Point[] pA = new Point[points];           //array of Points
        for (int i=0; i<pA.length; i++)
            pA[i] = new Point((int)(Math.random()*outputFrame.getWidth()),
                              (int)(Math.random()*outputFrame.getHeight()));
   
   	//draw the rectangles and points
        rectangle2DsDrawingPanel.drawRectangle2Ds(cA,pA);
    }
}



class Rectangle2DDrawingPanel extends JPanel {
    Rectangle2D cA[];
    Point pA[];
    
    public void paintComponent( Graphics g ) {
	int x, y, w,h;
	int frameHeight=getHeight();
	super.paintComponent( g );     //clears the drawing area.
	for (int i=0; i<cA.length; i++) {
	    w = (int)(cA[i].getWidth());
	    h = (int)(cA[i].getHeight());
	    x = (int)(cA[i].getX());
	    y = frameHeight - (int)(cA[i].getY());
	    g.setColor(Color.BLACK);
	    for (int j=0; j<cA.length; j++)    //check each other rectangle if overlaps it
	    	if (i!=j && cA[i].overlaps(cA[j]))
	    	    if (cA[i].contains(cA[j])) {  //if overlaps, check if contains
	                g.setColor(Color.GREEN);
	                break;
	    	    }
	    	    else
	                g.setColor(Color.BLUE);
	                
	    g.drawRect(x-w/2, y-h/2, w, h);
	    g.setColor(Color.BLACK);
	    g.drawString(""+(int)(cA[i].getArea()), x,y);
	}
	for (int i=0; i<pA.length; i++) {    //draw the points
	    g.setColor(Color.BLACK);
	    for (int j=0; j<cA.length; j++)    //check each other rectangle if contains it
	    	if (cA[j].contains(pA[i])) {
	            g.setColor(Color.RED);
	            break;
	    	}
            g.drawLine(pA[i].x,frameHeight-pA[i].y, pA[i].x,frameHeight-pA[i].y);
	}
    }
    
    public void drawRectangle2Ds ( Rectangle2D cA[], Point pA[]) {
    	this.cA = cA;
    	this.pA = pA;
        repaint();   //calls paintComponent
    }
}