public void placeCameras() {
		int d = Camera.getDistance();
		for (int i = 1; i < sizeX - 1; i += d) {
			for (int j = 1; j < sizeY - 1; j += d) {
				place(new Camera(i, j));
			}
		}
		//bottom right corner
		place(new Camera(sizeX - 2, sizeY - 2));
		//top right corner
		place(new Camera(1, sizeY - 2));
	}