1    package npw;
2    
3    import painter.SPainter;
4    import shapes.SCircle;
5    import shapes.SSquare;
6    
7    import javax.swing.*;
8    import java.awt.*;
9    import java.util.Random;
10   import java.util.Scanner;
11   
12   
13   public class SimpleDots {
14       private void paintTheImage(){
15           // Get input information
16           int radius = getNumber("Radius of Big Circle");
17           int smallradius = getNumber("Radius of smaller circles");
18           String dotcolor = getDotcolor( "Color of Dots (RED, GREEN, or BLUE)");
19   // establish the painter.
20           SPainter painter = new SPainter("Circle of Squares", radius*2+50, radius*2+50);
21           painter.setBrushWidth(3);
22           if ( dotcolor.equalsIgnoreCase("RED")) {
23               painter.setColor(Color.RED);
24           } else if ( dotcolor.equalsIgnoreCase("GREEN")) {
25               painter.setColor(Color.GREEN);
26           } else if (dotcolor.equalsIgnoreCase("BLUE")) {
27               painter.setColor(Color.BLUE);
28           } else {
29               painter.setColor(Color.BLACK);
30           }
31   
32           SCircle circle = new SCircle(radius);
33           SCircle square = new SCircle(smallradius);
34   
35           paintCircleOfSquares(painter,circle,square);
36   
37       }
38   
39       private String getDotcolor(String prompt) {
40           String nss = JOptionPane.showInputDialog(null,prompt+"?");
41           Scanner scanner = new Scanner(nss);
42           return scanner.next();
43       }
44   
45       private int getNumber(String prompt) {
46           String nss = JOptionPane.showInputDialog(null,prompt+"?");
47           Scanner scanner = new Scanner(nss);
48           return scanner.nextInt();
49   
50       }
51   
52   
53       private void paintCircleOfSquares(SPainter painter, SCircle circle, SCircle square) {
54           painter.mfd(circle.radius());
55           painter.tr();
56           // paint the stuff
57           double moved = 0;
58           while (moved < circle.diameter()) {
59               double chord = chordLength(circle.radius() - moved, circle);
60               int squares = squaresOnLineCount(chord, square.diameter());
61               paintRow(painter, square, squares);
62               nextRow(painter,square.diameter());
63               moved = moved + square.diameter();
64   
65           }
66           painter.tl();
67           painter.mfd(circle.radius());
68   
69       }
70   
71       private double chordLength(double yOffset, SCircle circle) {
72           double xLength = Math.sqrt(Math.pow(circle.radius(), 2) - Math.pow(yOffset, 2));
73           double chordLength = xLength * 2;
74           return chordLength;
75       }
76   
77       private int squaresOnLineCount(double lineLength, double sideLength) {
78           int squares = ( (int)Math.ceil( ( lineLength - sideLength) / sideLength ) + 1);
79           return squares;
80       }
81   
82       private void paintRow(SPainter painter, SCircle square, int squaresToPaint) {
83           double centerOffSet = ( (squaresToPaint * square.diameter()) / 2) - square.diameter()/2;
84           painter.mbk(centerOffSet);
85           int painted = 0;
86           while (painted < squaresToPaint){
87               paintOneSquare(painter, square);
88               painter.mfd(square.diameter());
89               painted = painted + 1;
90   
91           }
92           painter.mbk(centerOffSet + square.diameter());
93   
94       }
95   
96       private void paintOneSquare(SPainter painter, SCircle square) {
97           SCircle Test = new SCircle((square.radius()) /2 );
98           painter.paint(Test);
99       }
100  
101      private void nextRow(SPainter painter, double rowHeight) {
102          painter.tr();
103          painter.mfd(rowHeight);
104          painter.tl();
105  
106      }
107      public SimpleDots() {
108          paintTheImage();
109      }
110      public static void main(String[] args) {
111          SwingUtilities.invokeLater(new Runnable() {
112              public void run() {
113                  new SimpleDots();
114              }
115          });
116      }
117  }