1    package npw;
2    
3    import painter.SPainter;
4    import shapes.SCircle;
5    import shapes.SRectangle;
6    import shapes.SSquare;
7    
8    import javax.swing.*;
9    import java.awt.*;
10   import java.util.Random;
11   import java.util.Scanner;
12   
13   public class Invention1 {
14       private void paintTheImage(){
15           // Get the input information
16           int radius = 400;
17           int side = 40;
18           int Fav = getNumber("What is your favorite number");
19   
20           // Establish the painter
21           SPainter painter = new SPainter("Circle of Squares", radius*2+50, radius*2+50);
22           painter.setBrushWidth(3);
23           SCircle circle = new SCircle(radius);
24           SSquare square = new SSquare(side);
25   
26   
27           // Paint the squares
28           paintInvention1(painter, circle, square);
29           painter.mfd(150);
30           painter.mrt(150);
31           SRectangle eyes = new SRectangle(150,75);
32           if (Fav > 10) {
33               painter.setColor(Color.white);
34           } else {
35               painter.setColor(randomColor());
36           }
37   
38           painter.paint(eyes);
39           painter.mlt(300);
40           painter.paint(eyes);
41           painter.mrt(150);
42           painter.mbk(300);
43           SRectangle mouth = new SRectangle(75,400);
44           painter.paint(mouth);
45       }
46   
47       private void paintInvention1(SPainter painter, SCircle circle, SSquare square){
48           // Position the painter to begin drawing the rows
49           painter.mfd(circle.radius());
50           painter.tr();
51           // Paint the circle of squares
52           double moved = 0;
53           while (moved < circle.diameter()) {
54               double chord = chordLength(circle.radius() - moved, circle);
55               int squares = squaresOnLineCount(chord, square.side());
56               paintRow(painter, square, squares);
57               nextRow(painter, square.side());
58               moved = moved + square.side();
59           }
60           // Make the method invariant with respect to painter position
61           painter.tl();
62           painter.mfd(circle.radius());
63       }
64   
65       // Move to the next row
66       private void nextRow(SPainter painter, double rowHeight){
67           painter.tr();
68           painter.mfd(rowHeight);
69           painter.tl();
70       }
71   
72       // Assumes the painter is at the center of the row to paint, facing right.
73       private void paintRow(SPainter painter, SSquare square, int squaresToPaint){
74           // Move backward 1/2 of the length we're painting to get ready to paint the row.
75           double centerOffset = ( (squaresToPaint * square.side()) / 2) - square.side()/2;
76           painter.mbk(centerOffset);
77   
78           // Paint the row of squares.
79           int painted = 0;
80           while (painted < squaresToPaint){
81               paintOneSquare(painter, square);
82               painter.mfd(square.side());
83               painted = painted + 1;
84           }
85   
86           // Make the method invariant with respect to painter position.
87           painter.mbk(centerOffset + square.side());
88       }
89   
90       private void paintOneSquare(SPainter painter, SSquare square){
91   
92           painter.setColor(Color.orange);
93           painter.paint(square);
94           painter.setColor(Color.red);
95           painter.draw(square);
96   
97           square.s2();
98           painter.setColor(Color.white);
99           painter.paint(square);
100          painter.setColor(Color.yellow);
101          painter.draw(square);
102          square.x2();
103  
104  
105  
106  
107  
108      }
109  
110      private static int squaresOnLineCount(double lineLength, double sideLength){
111          int squares = ( (int)Math.ceil( ( lineLength - sideLength ) / sideLength ) + 1);
112          return squares;
113      }
114  
115      private double chordLength(double yOffset, SCircle circle){
116          double xLength = Math.sqrt(Math.pow(circle.radius(), 2) - Math.pow(yOffset, 2));
117          double chordLength = xLength * 2;
118          return chordLength;
119      }
120  
121      private static int getNumber(String prompt) {
122          String nss = JOptionPane.showInputDialog(null,prompt+"?");
123          Scanner scanner = new Scanner(nss);
124          return scanner.nextInt();
125      }
126  
127      private static Color randomColor() {
128          Random rgen = new Random();
129          int r = rgen.nextInt(256);
130          int g = rgen.nextInt(256);
131          int b = rgen.nextInt(256);
132          return new Color(r,g,b);
133      }
134  
135      public Invention1() {
136          paintTheImage();
137      }
138  
139      public static void main(String[] args) {
140          SwingUtilities.invokeLater(new Runnable() {
141              public void run() {
142                  new Invention1();
143              }
144          });
145      }
146  }
147