Add the transformations stack code.

[TP_POO.git] / TP2 / Piletransformations.java

class Piletransformations {
    private Point[] transformations;
    private int currentTransformation;

    Piletransformations(int size) {
        transformations = new Point[size];
        for (int i = 0; i < transformations.length; i++) {
            transformations[i] = new Point(0, 0);
        }
        currentTransformation = 0;
    }

    public Point getCurrentTransformation() {
        if (isEmpty()) {
            return transformations[currentTransformation];
        } else {
            return transformations[currentTransformation - 1];
        }
    }

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

    private boolean isFull() {
        return (currentTransformation >= transformations.length);
    }

    public boolean empiler(Point p) {
        boolean rtVal = false;
        if (isEmpty()) {
            transformations[currentTransformation] = p;
            currentTransformation++;
            rtVal = true;
        } else if (!isFull()) {
            transformations[currentTransformation] = transformations[currentTransformation - 1].additionner(p);
            currentTransformation++;
            rtVal = true;
        }
        return rtVal;
    }

    public Point depiler() {
        if(!isEmpty()) {
            currentTransformation--;
            return transformations[currentTransformation];
        } else {
            return transformations[currentTransformation];
        }
    }

    public void display() {
        System.out.println("----");
        for (int i = 0; i < transformations.length; i++) {
            System.out.println(transformations[i].toString());
        }
    }

}