+void Renderer::exclude(const Renderable &renderable)
+{
+ excluded.insert(&renderable);
+}
+
+void Renderer::include(const Renderable &renderable)
+{
+ excluded.erase(&renderable);
+}
+
+void Renderer::render(const Renderable &renderable, const Tag &tag)
+{
+ if(!excluded.count(&renderable))
+ renderable.render(*this, tag);
+}
+