bool operator < (const QPointF& lhs, const QPointF& rhs)
{
    return lhs.x() < rhs.x() || (lhs.x() == rhs.x() && lhs.y() < rhs.y());
}

bool operator > (const QPointF& lhs, const QPointF& rhs)
{
    return rhs < lhs;
}


        for (; i != enumerated.end(); ++i) {
            if (**i < **j) {
                painter.drawPoint(**i);
            } else {
                while (**i > **j) {
                    notInRect.push_back(*j);
                    ++j;
                }
                while (**i == **j)
                    ++j;
            }
        }