1    /* 
2     * Program that paints 300 random colored balloons in a blue sky. 
3     * It will feature commands. 
4     */
5    
6    package npw;
7    
8    import java.awt.Color;
9    import javax.swing.SwingUtilities;
10   import painter.SPainter;
11   import shapes.SCircle;
12   import java.util.Random;
13   import shapes.SSquare;
14   
15   public class AlternateBalloons {
16   
17       //REQUIRED INFRASTRUCTURE
18   
19       public AlternateBalloons() {
20           paintTheImage();
21       }
22   
23       public static void main(String[] args) {
24           SwingUtilities.invokeLater(new Runnable() {
25               public void run() {
26                   new AlternateBalloons();
27               }
28           });
29       }
30   
31       //THE PAINTER DOING ITS THING
32   
33       private void paintTheImage() {
34           SPainter painter = new SPainter("AlternateBalloons", 600, 600);
35           paintSky(painter); // ask IntelliJ to generate the stub
36           int nrOfBalloons = 300;
37           paintBalloons(painter, nrOfBalloons); // ask IntelliJ to generate the stub
38       }
39       private void paintSky(SPainter painter) {
40           painter.setColor(Color.BLUE);
41           SSquare sky = new SSquare(2000);
42           painter.paint(sky);
43   
44       }
45   
46       private void paintBalloons(SPainter painter, int nrOfBalloons) {
47           int i = 1;
48           while (i <= nrOfBalloons) {
49               paintOneBalloon(painter); //ask IntelliJ to generate the stub
50               i = i + 1;
51           }
52       }
53   
54       private void paintOneBalloon(SPainter painter) {
55           Random rgen = new Random();
56           int rn = rgen.nextInt(6);
57           if ( rn == 0 ) {
58               painter.setColor(randomColor());
59           } else if ( rn == 1 ) {
60               painter.setColor(randomColor());
61           } else if ( rn == 2 ) {
62               painter.setColor(randomColor());
63           } else if ( rn == 3 ) {
64               painter.setColor(randomColor());
65           } else if ( rn == 4 ) {
66               painter.setColor(randomColor());
67           } else {
68               painter.setColor(randomColor());
69           }
70           painter.move();
71           int balloonRadius = 30;
72           SCircle balloon = new SCircle(balloonRadius);
73           painter.paint(balloon);
74           painter.setColor(Color.BLACK);
75           painter.draw(balloon);
76       }
77       private static Color randomColor() {
78           int rv = (int) (Math.random() * 256);
79           int gv = (int) (Math.random() * 256);
80           int bv = (int) (Math.random() * 256);
81           return new Color(rv, gv, bv);
82   
83       }
84   }
85