Class ObjectBehaviour : public Renderable { public: explicit

Question

Class ObjectBehaviour : public Renderable { public: explicit

ObjectBehaviour(options_t opt) : object(opt), default_options(opt) {};

void change_default_options(options_t opt) {
default_options(opt);
}

void render(context_t context, const matrix4 &transformation) override {
if (!is_done) {
this->handle_on_render(context);
}
// is_done can change during behaviour handler
if (!is_done) {
object.render(context, transformation);
}
};

void on_done(const done_handler_t<object_t> &h) {
on_done_handler = h;
};

void on_focus_changed(const focus_change_handler_t<object_t> &h) {
on_focus_changed_handler = h;
}

protected:
object_t object;
options_t default_options;

error: type
'stitching::CircleOptions' does not provide a call operator
default_options(opt);

кто может подсказать, как ту быть?? или в чем именно ошибка