	delta_w = 1920 / 15;
	delta_h = 1080 / 15;
	
	    x_start = rect.x/delta_w + rect.width/(delta_w*4);
		y_start = rect.y/delta_h + rect.height/(delta_h*4);
		x_end = x_start + 3*rect.width/(delta_w*4); 
		y_end = y_start + 3*rect.height/(delta_h*4);