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    import painter.SPainter;
9    import shapes.SCircle;
10   import shapes.SSquare;
11   
12   public class Number3 {
13       // The solution to the graphical problem.
14   
15       private void paintTheImage() {
16           // Get the input information from the user.
17           int nrOfRows = getNumber("rows");
18           int nrOfColumns = getNumber("columns");
19           int sizeOfCirc = getNumber("Circle radius length");
20   
21           // Establish the painter.
22           int height = nrOfRows * sizeOfCirc;
23           int width = nrOfColumns * sizeOfCirc;
24           SPainter miro = new SPainter("Number 1",width+50,height+50);
25           miro.setBrushWidth(4);
26           SCircle circ = new SCircle(sizeOfCirc);
27   
28           // Paint the circles.
29           paintCircles(miro,circ,nrOfRows,nrOfColumns);
30       }
31   
32       private static int getNumber(String prompt) {
33           String nss = JOptionPane.showInputDialog(null,prompt+"?");
34           Scanner scanner = new Scanner(nss);
35           return scanner.nextInt();
36       }
37   
38       private static void paintCircles(SPainter miro, SCircle circ,
39                                          int nrOfRows, int nrOfColumns) {
40           // Position the painter to paint the rectangle of squares.
41           miro.mlt(((nrOfColumns-1)/2.0) * circ.radius());
42           miro.mbk(((nrOfRows-1)/2.0) * circ.radius());
43   
44           // Paint the rectangle of squares.
45           int i = 1;
46           while ( i <= nrOfRows) {
47               paintOneRow(miro,nrOfColumns, circ);
48               miro.mfd(circ.radius());
49               i = i + 1;
50           }
51   
52           // Make the method invariant with respect to painter position.
53           miro.mrt(((nrOfColumns-1)/2.0) * circ.radius());
54           miro.mfd(((nrOfRows-1)/2.0) * circ.radius());
55       }
56   
57       private static void paintOneRow(SPainter miro, int nrOfColumns, SCircle circ) {
58           int i = 1;
59           while ( i <= nrOfColumns ) {
60               paintOnedot(miro, circ);
61               miro.mrt(circ.radius());
62               i = i + 1;
63           }
64           miro.mlt(nrOfColumns* circ.radius());
65       }
66       // made
67       private static void paintOnedot(SPainter miro, SCircle circ) {
68           circ.s2();
69           miro.setColor(randomColor());
70           miro.paint(circ);
71           miro.draw(circ);
72           circ.x2();
73       }
74       private static Color randomColor() {
75           Random rgen = new Random();
76           int r = rgen.nextInt(256);
77           int g = rgen.nextInt(256);
78           int b = rgen.nextInt(256);
79           return new Color(r,b,g);
80       }
81   
82       public Number3(){
83           paintTheImage();
84       }
85   
86       public static void main(String[] args){
87           SwingUtilities.invokeLater(new Runnable() {
88               @Override
89               public void run() {
90                   new Number3();
91               }
92           });
93       }
94   }