TP2: Simplify the compacter method in the image class.

[TP_POO.git] / TP2 / Image.java

class Image extends Forme implements Compactable {
    final int IMAGE_MAX_SIZE = 100;
    Forme[] formeCollection;
    int formeNumber;

    Image() {
        super();
        formeCollection = new Forme[IMAGE_MAX_SIZE];
        formeNumber = 0;
    }

    Image(Point p) {
        super(p);
        formeCollection = new Forme[IMAGE_MAX_SIZE];
        formeNumber = 0;
    }

    private boolean isEmpty() {
        return (formeNumber == 0);
    }

    private boolean isFull() {
        return (formeNumber >= formeCollection.length);
    }

    public void dessiner(Piletransformations pile) {
        for (int i = 0; i < formeNumber; i++) {
            formeCollection[i].dessiner(pile);
        }
    }

    public void deplacer(Point p) {
        for (int i = 0; i < formeNumber; i++) {
            formeCollection[i].deplacer(p);
        }
    }

    public boolean ajouter(Forme forme) {
        boolean rtVal = false;
        if (!isFull()) {
            formeCollection[formeNumber] = forme;
            formeNumber++;
            rtVal = true;
        }
        return rtVal;
    }

    public boolean supprimer(int index) {
        boolean rtVal = false;
        if (!isEmpty()) {
            for (int j = index; (j < formeNumber - 1 && index < formeNumber); j++) {
                formeCollection[j] = formeCollection[j + 1];
            }
            rtVal = true;
            formeNumber--;
        }
        return rtVal;
    }

    public void afficher() {
        String className = this.getClass().getSimpleName();
        System.out.println("---- " + className + " ----");
        for (int i = 0; i < formeNumber; i++) {
            formeCollection[i].afficher();
        }
    }

    public void compacter(int nElements) {
        // Heavy solution
        /* int minIndex = formeNumber - nElements - 1;
        for (int i = formeNumber - 1; (i > minIndex && !isEmpty()); i--) {
            supprimer(i);
        } */
        // Lightweight solution
        if (formeNumber - nElements > 0) {
            formeNumber -= nElements;
        } else {
            formeNumber = 0;
        }
    }

}