public void rotation() {
        rota = (rota + 1) % 4;
        switch (Cases[0].getIdent()) {
            case 1:
                barre();
                break;

            case 2:
                carre();
                break;

            case 3:
                T();
                break;

            case 4:
                L();
                break;

            case 5:
                invL();
                break;

            case 6:
                Z();
                break;

            case 7:
                invZ();
                break;
        }
    }