void paint() { read_map_data(); paint(0, 0, get_width(), get_height()); clear_dirty(); }
void paint(Rectangle& r) { paint(r.x, r.y, r.w, r.h); }
	void paint()			// Paint whole image.		{		read_map_data();	// Gather in all objs., etc.		paint(0, 0, get_width(), get_height());		clear_dirty();		}