public void BoundBoxQueryTest()
        {
            var space = new Space();
            var body  = new Body(1, 1.66);
            var shape = new Box(body, 5, 5, 0);

            var pos = new Vect(3, 3);

            body.Position = pos;

            var bb = new BoundingBox();

            bb.Left   = -20;
            bb.Top    = -20;
            bb.Right  = +20;
            bb.Bottom = +20;

            Shape[] shapes = space.BoundBoxQuery(bb, ShapeFilter.All).ToArray();

            Assert.AreEqual(0, shapes.Length, "#1");

            space.AddBody(body);
            space.AddShape(shape);
            space.ReindexShape(shape);

            shapes = space.BoundBoxQuery(bb, ShapeFilter.All).ToArray();

            Assert.AreEqual(1, shapes.Length, "#2");
            Assert.AreSame(shape, shapes[0], "#3");


            shape.Dispose();
            body.Dispose();
            space.Dispose();
        }