1    package NPW;
2    
3    import java.awt.Color;
4    import java.util.Random;
5    import java.util.Scanner;
6    import javax.swing.JOptionPane;
7    import javax.swing.SwingUtilities;
8    
9    import painter.SPainter;
10   import shapes.SCircle;
11   import shapes.SSquare;
12   
13   public class Number4 {
14   
15       // The solution to the graphical problem.
16       private void paintTheImage() {
17           // Get the input information from the user.
18           int nrOfRows = getNumber("rows");
19           int nrOfColumns = getNumber("columns");
20           int sizeOfCircle = getNumber("circle radius");
21           String color = getColor("red blue or green");
22   
23   
24           // Establish the painter.
25           int height = nrOfRows * sizeOfCircle * 2;
26           int width = nrOfColumns * sizeOfCircle * 2;
27           SPainter miro = new SPainter("Number 4",width+50,height+50);
28           miro.setBrushWidth(4);
29           SCircle circle = new SCircle(sizeOfCircle);
30           // Paint the rectangles.
31           paintRectangle(miro,circle,nrOfRows,nrOfColumns,color);
32       }
33   
34       private String getColor(String prompt) {
35           String nss = JOptionPane.showInputDialog(null,prompt+"?");
36           Scanner scanner = new Scanner(nss);
37           return scanner.nextLine();
38       }
39   
40       private static int getNumber(String prompt) {
41           String nss = JOptionPane.showInputDialog(null,prompt+"?");
42           Scanner scanner = new Scanner(nss);
43           return scanner.nextInt();
44       }
45   
46       private static void paintRectangle(SPainter miro, SCircle circle,
47                                          int nrOfRows, int nrOfColumns,String color) {
48           // Position the painter to paint the rectangle of squares.
49           miro.mlt(((nrOfColumns-1)/2.0) * circle.diameter());
50           miro.mbk(((nrOfRows-1)/2.0) * circle.diameter());
51           // Paint the rectangle of squares.
52           int i = 1;
53           while ( i <= nrOfRows) {
54               paintOneRow(miro,nrOfColumns,circle, color);
55               miro.mfd(circle.diameter());
56               i = i + 1;
57           }
58           // Make the method invariant with respect to painter position.
59           miro.mrt(((nrOfColumns-1)/2.0) * circle.diameter());
60           miro.mfd(((nrOfRows-1)/2.0) * circle.diameter());
61       }
62   
63       private static void paintOneRow(SPainter miro, int nrOfColumns, SCircle circle, String color) {
64           int i = 1;
65           while ( i <= nrOfColumns ) {
66               paintOneSquare(miro,circle,color);
67               miro.mrt(circle.diameter());
68               i = i + 1;
69           }
70           miro.mlt(nrOfColumns*circle.diameter());
71       }
72   
73       private static void paintOneSquare(SPainter miro, SCircle circle, String color) {
74           //Add two instructions
75           circle.s2();
76           if (color.equalsIgnoreCase("red")) {
77               miro.setColor(Color.RED);
78               miro.paint(circle);
79           } else if (color.equalsIgnoreCase("blue")) {
80               miro.setColor(Color.BLUE);
81               miro.paint(circle);
82           } else if (color.equalsIgnoreCase("green")) {
83               miro.setColor(Color.green);
84               miro.paint(circle);
85           } else {
86               miro.setColor(Color.black);
87               miro.paint(circle);
88           }
89           circle.x2();
90       }
91   
92       public Number4(){
93           paintTheImage();
94       }
95   
96       public static void main(String[] args){
97           SwingUtilities.invokeLater(new Runnable() {
98               @Override
99               public void run() {
100                  new Number4();
101              }
102          });
103      }
104  }
105