public void testIsec() {
Rect a = new Rect(100, 100, 100, 100);
Rect b = new Rect(110, 110, 10, 10);
assertTrue(a.intersectsRect(b));
assertTrue(b.intersectsRect(a));
b = new Rect(80, 80, 30, 200);
assertTrue(a.intersectsRect(b));
}
public void testRectMerge() {