void picture_rep::internal_copy_from (int x, int y, picture src, int x1, int y1, int x2, int y2) { for (int yy= y1; yy < y2; yy++) for (int xx= x1; xx < x2; xx++) internal_set_pixel (x + xx, y + yy, src->internal_get_pixel (xx, yy)); }
inline void set_pixel (int x, int y, color c) { internal_set_pixel (x + get_origin_x (), y + get_origin_y (), c); }