1    /* 
2     * Program that paints 300 balloons, each of radius 30, of 6 different 
3     * “nameless” colors, will randomly populate the sky. 
4     * It will feature commands. 
5     */
6    package npw;
7    import java.awt.Color;
8    import java.util.Random;
9    
10   import javax.swing.SwingUtilities;
11   import painter.SPainter;
12   import shapes.SCircle;
13   import shapes.SSquare;
14   public class AlternateBalloons {
15       // REQUIRED INFRASTRUCTURE
16       public AlternateBalloons() {
17           paintTheImage();
18       }
19   
20       public static void main(String[] args) {
21           SwingUtilities.invokeLater(new Runnable() {
22               public void run() {
23                   new AlternateBalloons();
24               }
25           });
26       }
27   
28       // THE PAINTER DOING ITS THING
29       private void paintTheImage() {
30           SPainter painter = new SPainter("Balloons", 600, 600);
31           paintSky(painter); // ask IntelliJ to generate the stub
32           int nrOfBalloons = 300;
33           paintAlternateBalloons(painter, nrOfBalloons); // ask IntelliJ to generate the stub
34       }
35   
36       private void paintSky(SPainter painter) {
37           painter.setColor(Color.BLUE);
38           SSquare sky = new SSquare(2000);
39           painter.paint(sky);
40       }
41   
42       private void paintAlternateBalloons(SPainter painter, int nrOfBalloons) {
43           int i = 1;
44           while (i <= nrOfBalloons) {
45               paintOneBalloon(painter); // ask IntelliJ to generate the stub
46               i = i + 1;
47           }
48       }
49   
50       private void paintOneBalloon(SPainter painter) {
51           Random rgen = new Random();
52           int rn = rgen.nextInt(6);
53           if (rn == 0) {
54               painter.setColor(Color.PINK);
55           } else if (rn == 1) {
56               painter.setColor(green());
57           } else if (rn == 2) {
58               painter.setColor(Color.GRAY);
59           } else if (rn == 3) {
60               painter.setColor(orange());
61           } else if (rn == 4) {
62               painter.setColor(purple());
63           } else {
64               painter.setColor(yellow());
65           }
66           painter.move();
67           int balloonRadius = 30;
68           SCircle balloon = new SCircle(balloonRadius);
69           painter.paint(balloon);
70           painter.setColor(Color.BLACK);
71           painter.draw(balloon);
72       }
73       private static Color green() {
74           int rv = (int)(Math.random()*169);
75           int gv = (int)(Math.random()*235);
76           int bv = (int)(Math.random()*186);
77           return new Color(rv,gv,bv);
78       }
79       private static Color purple() {
80           int rv = (int)(Math.random()*211);
81           int gv = (int)(Math.random()*173);
82           int bv = (int)(Math.random()*255);
83           return new Color(rv,gv,bv);
84       }
85       private static Color orange() {
86           int rv = (int)(Math.random()*252);
87           int gv = (int)(Math.random()*201);
88           int bv = (int)(Math.random()*124);
89           return new Color(rv,gv,bv);
90       }
91       private static Color yellow() {
92           int rv = (int)(Math.random()*255);
93           int gv = (int)(Math.random()*252);
94           int bv = (int)(Math.random()*173);
95           return new Color(rv,gv,bv);
96       }
97   }
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