...
		if(tx == ALIGN_NULL) {
			rect.right = min(org.right - op.x + p.x, maxrect.right);
			if (rect.right < rect.left) Swap(rect.left, rect.right);
		}
		if(ty == ALIGN_NULL) {
			rect.bottom = min(org.bottom - op.y + p.y, maxrect.bottom);
			if (rect.bottom < rect.top) Swap(rect.top, rect.bottom);
		}
...