void picture_rep::translate_origin (int dx, int dy) { set_origin (get_origin_x () + dx, get_origin_y () + dy); }
inline color get_pixel (int x, int y) { return internal_get_pixel (x + get_origin_x (), y + get_origin_y ()); }
inline void set_pixel (int x, int y, color c) { internal_set_pixel (x + get_origin_x (), y + get_origin_y (), c); }
inline color smooth_pixel (double x, double y) { return internal_smooth_pixel (x + get_origin_x (), y + get_origin_y ()); }