base_component->mesh_component->circle_mesh_component

mesh_component
{
    index;
    virtual render(renderer);
}

circle_mesh_component
{
    radius;
    points_count;
    render(renderer)
    {
        points = calculate_points_parametric();
        renderer->draw_primitives(RENDER_PRIMITIVE_LINES, points, index);
    }
}

entity
{
    vector<base_component> components;
}

render_system
{
    renderer;
    render_entity(entity)
    {
        mesh = entity.getComponent<MeshComponent>();
        mesh.render(renderer);
    }
}