text: #pragma once
  
  #include <core/types.h>
  
  namespace kairos {
  
  static constexpr float default_line_width = 1.f;
  
  struct pen {
      color my_color{1.f};
      float my_line_width{0.f};
      float my_opacity{0.f};
  };
  
  } // namespace kairos