#if !defined(_DRAWABLE_H_)
#define _DRAWABLE_H_

#include "color.h"
#include "coordsys.h"
#include "canvas.h"

class drawable {
  
   protected:
     coordsys system;

     color pen_color;
     int depth;
     int order;


     static long last_id;
     long id;

     coordinate rotation_center;
     bool rotate;
     double rotation_angle;

   public:
     drawable(const coordsys&);
     void set_depth(int);
     void set_order(int);
     void set_pen_color(const color&);
     void set_rotate(bool = true);
     void set_rotation_center(const coordinate&);
     void set_rotation_angle(double);
     void set_id(long);

     int get_depth() const;
     int get_order() const;
     const color& get_pen_color() const;
     const coordinate& get_rotation_center() const;
     double get_rotation_angle() const;
     long get_id() const;

     virtual void draw(canvas&) = 0;
};

int round(double);

#endif