+ view->set_camera(&stage->camera);
+ view->set_content(stage->pipeline);
+}
+
+
+Stage::SetCamera::SetCamera():
+ stage(0),
+ camera(0)
+{ }
+
+Stage::SetCamera::SetCamera(Stage &s, const GL::Camera &c):
+ stage(&s),
+ camera(&c)
+{ }
+
+void Stage::SetCamera::validate() const
+{
+ if(!stage)
+ throw logic_error("null stage");
+ if(!camera)
+ throw logic_error("null camera");
+}
+
+void Stage::SetCamera::start(float, float)
+{
+ stage->set_camera(*camera);
+}
+
+
+Stage::UseInView::Loader::Loader(UseInView &u, Demo &d):
+ DataFile::DerivedObjectLoader<UseInView, Action::Loader>(u, d)
+{
+ add("stage", &Loader::stage);
+ add("view", &Loader::view);
+}
+
+void Stage::UseInView::Loader::stage(const string &n)
+{
+ obj.stage = &demo.get_thing<Stage>(n);
+}
+
+void Stage::UseInView::Loader::view(const string &n)
+{
+ obj.view = &demo.get_thing<GL::View>(n);
+}
+
+
+Stage::SetCamera::Loader::Loader(SetCamera &s, Demo &d):
+ DataFile::DerivedObjectLoader<SetCamera, Action::Loader>(s, d)
+{
+ add("camera", &Loader::camera);
+ add("stage", &Loader::stage);
+}
+
+void Stage::SetCamera::Loader::stage(const string &n)
+{
+ obj.stage = &demo.get_thing<Stage>(n);
+}
+
+void Stage::SetCamera::Loader::camera(const string &n)
+{
+ obj.camera = &demo.get_resources().get<GL::Camera>(n);