private boolean isSinge(final int x, final int y)
	{
		boolean singe = false;
		final Iterator<SingeErratique> iteSinge = this.erratiques.iterator();

		while (iteSinge.hasNext()) {
			final SingeErratique singeErratique = iteSinge.next();
			singe = singeErratique.coordonneesEgales(x, y);
		}
		return singe;
	}