add(.4, .4);
add(.5, .5);
CountingGraphics g = paint(new Rectangle(84, 116, 10, 10));
LineChecker c = new LineChecker();
c.allow(39, 160, 59, 140);
c.allow(59, 140, 79, 120);
c.require(79, 120, 99, 100);
c.check(g.getLines());
assertEquals(g.getLines().size() + 1, g.getPointCount());
}