document.Add(new Circle(Vector(50, 150), 49, &document));
document.Add(new Arc(Vector(300, 300), 32, PI / 4.0, PI * 1.3, &document)),
document.Add(new Arc(Vector(200, 200), 60, PI / 2.0, PI * 1.5, &document));
document.Add(new Circle(Vector(50, 150), 49, &document));
document.Add(new Arc(Vector(300, 300), 32, PI / 4.0, PI * 1.3, &document)),
document.Add(new Arc(Vector(200, 200), 60, PI / 2.0, PI * 1.5, &document));