1    package npw;
2    
3    import java.awt.*;
4    import java.util.*;
5    import javax.swing.*;
6    import painter.SPainter;
7    import shapes.*;
8    
9    public class AlternateBalloons {
10   
11       // REQUIRED INFRASTRUCTURE
12   
13       public AlternateBalloons(){
14           paintTheImage();
15       }
16   
17       public static void main(String[] args){
18           SwingUtilities.invokeLater(new Runnable() {
19               public void run() {
20                   new AlternateBalloons();
21               }
22           });
23       }
24   
25       // THE PAINTER DOING ITS THING
26   
27       private void paintTheImage(){
28           SPainter painter = new SPainter("Balloons", 600,600);
29           paintSky(painter);
30           int nrOfBalloons = 300;
31           paintBalloons(painter,nrOfBalloons);
32       }
33   
34       private void paintSky(SPainter painter) {
35           painter.setColor(Color.BLUE);
36           SSquare sky = new SSquare(2000);
37           painter.paint(sky);
38       }
39   
40       private void paintBalloons(SPainter painter, int nrOfBalloons) {
41           int i = 1;
42           while (i <= nrOfBalloons) {
43               paintOneBalloon(painter);
44               i = i + 1;
45           }
46       }
47   
48       private void paintOneBalloon(SPainter painter) {
49           Random rgen = new Random();
50           int rn = rgen.nextInt(5);
51           if (rn == 0){
52               painter.setColor(randomColor());
53           } else if (rn == 1){
54               painter.setColor(randomColor());
55           } else if (rn == 2){
56               painter.setColor(randomColor());
57           } else if (rn == 3){
58               painter.setColor(randomColor());
59           } else if (rn == 4){
60               painter.setColor(randomColor());
61           } else {
62               painter.setColor(randomColor());
63           }
64           painter.move();
65           int balloonRadius = 30;
66           SCircle balloon = new SCircle(balloonRadius);
67           painter.paint(balloon);
68           painter.setColor(Color.BLACK);
69           painter.draw(balloon);
70       }
71   
72       private Color randomColor() {
73           int rv = (int)(Math.random()*256);
74           int gv = (int)(Math.random()*256);
75           int bv = (int)(Math.random()*256);
76           return new Color(rv,gv,bv);
77       }
78   
79   }
80