src/Eye.java

   1 import java.awt.Color;
   2 import java.util.Arrays;
   3
   4 public class Eye {
   5     private String strColor;
   6     private Color color;
   7     private String[] colorsList = {"black", "blue", "brown", "green"};
   8
   9     Eye() {
  10         //this.color = Color.white;
  11         sortColorList();
  12     }
  13
  14     /**
  15      * @param color
  16      */
  17     Eye(String color) {
  18         setStrColor(color);
  19         setColor(color);
  20         sortColorList();
  21     }
  22
  23     public String getStrColor() {
  24         return strColor;
  25     }
  26
  27     public void setStrColor(String strColor) {
  28         if (validateColor(strColor)) {
  29             this.strColor = strColor;
  30         } else {
  31             throw new IllegalArgumentException("Color must be" + this.colorListToString());
  32         }
  33     }
  34
  35     public String[] getColorsList() {
  36         return colorsList;
  37     }
  38
  39     /**
  40      * @return
  41      */
  42     public Color getColor() {
  43         return color;
  44     }
  45
  46     /**
  47      * @param color
  48      */
  49     public void setColor(String color) {
  50         if (validateColor(color)) {
  51             if (color.equals("black"))
  52                 this.color = Color.black;
  53             else if (color.equals("blue"))
  54                 this.color = Color.blue;
  55             else if (color.equals("brown"))
  56                 this.color = new Color(88, 41, 0);
  57             else if (color.equals("green"))
  58                 this.color = Color.green;
  59         } else {
  60             throw new IllegalArgumentException("Color must be" + this.colorListToString());
  61         }
  62     }
  63
  64     /**
  65      * @param color
  66      * @return
  67      */
  68     private boolean validateColor(String color) {
  69         for (String c : colorsList) {
  70             if (color.equals(c)) {
  71                 return true;
  72             }
  73         }
  74         return false;
  75     }
  76
  77     private void sortColorList() {
  78         Arrays.sort(this.colorsList);
  79     }
  80
  81     /**
  82      * @param eye
  83      * @return
  84      */
  85     public int distanceTo(Eye eye) {
  86         double r_diff = this.getColor().getRed() - eye.getColor().getRed();
  87         double g_diff = this.getColor().getGreen() - eye.getColor().getGreen();
  88         double b_diff = this.getColor().getBlue() - eye.getColor().getBlue();
  89         //See https://en.wikipedia.org/wiki/Color_difference
  90         Double distance = Math.sqrt(2 * Math.pow(r_diff, 2) + 4 * Math.pow(g_diff, 2) + 3 * Math.pow(b_diff, 2));
  91         return distance.intValue();
  92     }
  93
  94     private String colorListToString() {
  95         StringBuilder stringBuilder = new StringBuilder();
  96         for (String c : colorsList) {
  97             stringBuilder.append(" ");
  98             stringBuilder.append(c);
  99         }
 100         return stringBuilder.toString();
 101     }
 102 }