APL/APL2.1/TP7/PolyLigne/Etoile.java

    import java.awt.Point;
    import java.util.Objects;

    public class Etoile implements ProducteurDePoints {
      private static final int xCentre = 100;
      private static final int yCentre = 100;
      private static final double rayon = 90.0;
      private static final double angleDepart = Math.PI/4.0;
      private static final double angleIncrement = (4.0*Math.PI)/5.0;
      private double numero;
      public Etoile() {
        this.numero = 0.0;
      }
      public Point suivant() {
        Point p = null;
        if (this.numero < 6.0) {
          double angle = Etoile.angleDepart+this.numero*Etoile.angleIncrement;
          p = new Point((int) (Etoile.rayon*Math.cos(angle)),
                        (int) (Etoile.rayon*Math.sin(angle)));
          p.translate(Etoile.xCentre, Etoile.yCentre);
          this.numero++;
        } else {
          this.numero = 0.0;
        }
        return p;
      }

      static public void main(String[] args)
      {
          Etoile e = new Etoile();
          Point p = e.suivant();
          while (!Objects.isNull(p))
          {
            System.out.println("point: " + p);
            p = e.suivant();
          }
      }
    }