private DynamicTreeTest()
        {
            _worldExtent = 15.0f;
            _proxyExtent = 0.5f;

            Rand.Random = new Random(888);

            for (int i = 0; i < ActorCount; ++i)
            {
                _actors[i] = new Actor();

                Actor actor = _actors[i];
                GetRandomAABB(out actor.AABB);
                int proxyId = _tree.AddProxy(ref actor.AABB);
                actor.ProxyId = proxyId;
                _tree.SetUserData(proxyId, actor);
            }

            float h = _worldExtent;

            _queryAABB.LowerBound = new Vector2(-3.0f, -4.0f + h);
            _queryAABB.UpperBound = new Vector2(5.0f, 6.0f + h);

            _rayCastInput.Point1 = new Vector2(-5.0f, 5.0f + h);
            _rayCastInput.Point2 = new Vector2(7.0f, -4.0f + h);
            //_rayCastInput.p1 = new Vector2(0.0f, 2.0f + h);
            //_rayCastInput.p2 = new Vector2(0.0f, -2.0f + h);
            _rayCastInput.MaxFraction = 1.0f;

            _automated = false;
        }