_lightState.setEnabled(false);
CollisionTreeManager.getInstance().setTreeType(CollisionTree.Type.AABB);
CollisionTreeManager.getInstance().setDoSort(true);
results = new PrimitiveCollisionResults();
sphere = new Sphere("sphere", 10, 10, 2);
sphere.setSolidColor(ColorRGBA.WHITE);
sphere.setModelBound(new BoundingBox());