1    /* 
2     * Program to paint a rectangle, centered in the canvas, made up of red, green, blue, or black 
3     * colored circles that are spaced evenly. 
4     */
5    
6    package npw;
7    
8    import painter.SPainter;
9    import shapes.SCircle;
10   
11   import javax.swing.*;
12   import java.awt.*;
13   import java.util.Scanner;
14   
15   public class Number4 {
16       // The solution to the graphical problem.
17       private static void paintTheImage() {
18           // Get the input information fron the user.
19           int nrOfRows = getNumber("rows");
20           int nrOfColumns = getNumber("columns");
21           int sizeOfSquare = getNumber("circle radius length");
22           // Establish the painter.
23           int height = nrOfRows * sizeOfSquare;
24           int width = nrOfColumns * sizeOfSquare;
25           Color color = setColor();
26           SPainter miro = new SPainter("Number 1", (width * 2) + 50, (height * 2) + 50);
27           miro.setBrushWidth(4);
28           SCircle circle = new SCircle(sizeOfSquare);
29           miro.setColor(color);
30           // Paint the rectangles.
31           paintRectangle(miro, circle, nrOfRows, nrOfColumns);
32       }
33   
34       private static int getNumber(String prompt) {
35           String nss = JOptionPane.showInputDialog(null, prompt + "?");
36           Scanner scanner = new Scanner(nss);
37           return scanner.nextInt();
38       }
39   
40       private static void paintRectangle(SPainter miro, SCircle circle,
41                                          int nrOfRows, int nrOfColumns) {
42           // Position the painter to paint the rectangle of circles.
43           miro.mlt(((nrOfColumns - 1) / 2.0) * circle.radius() * 2); //changed to diameter shifted left
44           miro.mbk(((nrOfRows - 1) / 2.0) * circle.radius() * 2); //changed to diameter shifted it down
45           // Paint the rectangle of circles.
46           int i = 1;
47           while (i <= nrOfRows) {
48               paintOneRow(miro, nrOfColumns, circle);
49               miro.mfd(circle.diameter());
50               i = i + 1;
51           }
52           // Make the method invariant with respect to painter position.
53           miro.mrt(((nrOfColumns - 1) / 2.0) * circle.radius());
54           miro.mfd(((nrOfRows - 1) / 2.0) * circle.radius());
55       }
56   
57       private static void paintOneRow(SPainter miro, int nrOfColumns, SCircle circle) {
58           int i = 1;
59           while (i <= nrOfColumns) {
60               paintOneCircle(miro, circle);
61               miro.mrt(circle.diameter()); //moved over too much when * 1.5
62               i = i + 1;
63           }
64           miro.mlt(nrOfColumns * circle.diameter());
65       }
66   
67       private static void paintOneCircle(SPainter miro, SCircle circle) {
68           circle.shrink(circle.radius() / 2);
69           miro.paint(circle);
70           circle.expand(circle.radius());
71       }
72   
73       private static Color setColor() {
74           String nss = JOptionPane.showInputDialog(null, "Color?");
75           Scanner scanner = new Scanner(nss);
76              // String command = JOptionPane.showInputDialog(null, "Color?");
77           String command = scanner.nextLine();
78               if (command == null) {
79                   command = "exit";
80               } //user clicked on Canceln
81               if (command.equalsIgnoreCase("blue")) {
82                   return (Color.BLUE);
83               } else if (command.equalsIgnoreCase("red")) {
84                   return (Color.RED);
85               } else if (command.equalsIgnoreCase("green")) {
86                   return (Color.GREEN);
87               } else {
88                   return(Color.BLACK);
89               }
90           }
91   
92   
93       public Number4() {
94           paintTheImage();
95       }
96   
97       public static void main(String[] args) {
98           SwingUtilities.invokeLater(new Runnable() {
99               @Override
100              public void run() {
101                  new Number4();
102              }
103          });
104      }
105  }