TP2/Piletransformations.java

   1
   2 @ClassPreamble (
   3     author = "Jérôme Benoit",
   4     date = "06/21/2009"
   5 )
   6 class Piletransformations {
   7     private Point[] transformations;
   8     private int currentTransformation;
   9
  10     Piletransformations(int size) {
  11         transformations = new Point[size];
  12         for (int i = 0; i < transformations.length; i++) {
  13             transformations[i] = new Point(0, 0);
  14         }
  15         currentTransformation = 0;
  16     }
  17
  18     public Point getCurrentTransformation() {
  19         if (isEmpty()) {
  20             return transformations[currentTransformation];
  21         } else {
  22             return transformations[currentTransformation - 1];
  23         }
  24     }
  25
  26     private boolean isEmpty() {
  27         return (currentTransformation == 0);
  28     }
  29
  30     private boolean isFull() {
  31         return (currentTransformation >= transformations.length);
  32     }
  33
  34     public boolean empiler(Point p) {
  35         boolean rtVal = false;
  36         if (isEmpty()) {
  37             transformations[currentTransformation] = p;
  38             currentTransformation++;
  39             rtVal = true;
  40         } else if (!isFull()) {
  41             transformations[currentTransformation] = transformations[currentTransformation - 1].additionner(p);
  42             currentTransformation++;
  43             rtVal = true;
  44         }
  45         return rtVal;
  46     }
  47
  48     public Point depiler() {
  49         if(!isEmpty()) {
  50             currentTransformation--;
  51             return transformations[currentTransformation];
  52         } else {
  53             return transformations[currentTransformation];
  54         }
  55     }
  56
  57     public void display() {
  58         System.out.println("----");
  59         for (int i = 0; i < currentTransformation; i++) {
  60             System.out.println(transformations[i].toString());
  61         }
  62     }
  63
  64 }