impl ElementUpdate for Circle {
    fn set_group_transform(&mut self, transform: &Transform) {
        self.transform_data.group_transform = transform.clone();
    }

    fn set_local_transform(&mut self, transform: &Transform) {
        self.transform_data.local_transform = transform.clone();
    }

    fn set_color(&mut self, color: &Color) {
        self.vertex_data.color = color.clone();
    }
}

pub fn update_node<T: Element + ElementUpdate>(element: &mut T, attribute_stack: &AttributeStack) {
    element.set_group_transform(&attribute_stack.transform);
}

/*
error[E0277]: the trait bound `&element::circle::Circle: element::ElementUpdate` is not satisfied
  --> src\processor.rs:12:40
   |
12 |         ElementType::Circle(circle) => update_node(&mut circle, &attribute_stack),
   |                                        ^^^^^^^^^^^ the trait `element::ElementUpdate` is not implemented for `&element::circle::Circle`
   |
   = help: the following implementations were found:
             <element::circle::Circle as element::ElementUpdate>
note: required by `processor::update_node`
  --> src\processor.rs:26:1
   |
26 | pub fn update_node<T: ElementUpdate>(element: &mut T, attribute_stack: &AttributeStack) {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
*/